diff --git a/.changeset/cool-knives-fry.md b/.changeset/cool-knives-fry.md
new file mode 100644
index 000000000..737ce7b41
--- /dev/null
+++ b/.changeset/cool-knives-fry.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Bump Sass dependency version
diff --git a/packages/astro/package.json b/packages/astro/package.json
index a88a30210..4d8332b31 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -90,7 +90,7 @@
     "rehype-slug": "^5.0.0",
     "resolve": "^1.20.0",
     "rollup": "^2.57.0",
-    "sass": "^1.43.3",
+    "sass": "^1.43.4",
     "semver": "^7.3.5",
     "send": "^0.17.1",
     "shiki": "^0.9.10",
diff --git a/packages/astro/test/0-css.test.js b/packages/astro/test/0-css.test.js
new file mode 100644
index 000000000..734e16445
--- /dev/null
+++ b/packages/astro/test/0-css.test.js
@@ -0,0 +1,269 @@
+/**
+ * CSS test
+ * Run this test first! This uses quite a bit of memory, so prefixing with `0-` helps it start and finish early,
+ * rather than trying to start up when all other threads are busy and having to fight for resources
+ */
+
+import { expect } from 'chai';
+import cheerio from 'cheerio';
+import { loadFixture } from './test-utils.js';
+
+describe('Styles SSR', function () {
+  this.timeout(30000); // test needs a little more time in CI
+
+  let fixture;
+  let index$;
+  let bundledCSS;
+
+  before(async () => {
+    fixture = await loadFixture({
+      projectRoot: './fixtures/0-css/',
+      renderers: ['@astrojs/renderer-react', '@astrojs/renderer-svelte', '@astrojs/renderer-vue'],
+    });
+    await fixture.build();
+
+    // get bundled CSS (will be hashed, hence DOM query)
+    const html = await fixture.readFile('/index.html');
+    index$ = cheerio.load(html);
+    const bundledCSSHREF = index$('link[rel=stylesheet][href^=assets/]').attr('href');
+    bundledCSS = await fixture.readFile(bundledCSSHREF.replace(/^\/?/, '/'));
+  });
+
+  describe('Astro styles', () => {
+    it('HTML and CSS scoped correctly', async () => {
+      const $ = index$;
+
+      const el1 = $('#dynamic-class');
+      const el2 = $('#dynamic-vis');
+      const classes = $('#class').attr('class').split(' ');
+      const scopedClass = classes.find((name) => /^astro-[A-Za-z0-9-]+/.test(name));
+
+      // 1. check HTML
+      expect(el1.attr('class')).to.equal(`blue ${scopedClass}`);
+      expect(el2.attr('class')).to.equal(`visible ${scopedClass}`);
+
+      // 2. check CSS
+      expect(bundledCSS).to.include(`.blue.${scopedClass}{color:#b0e0e6}.color\\:blue.${scopedClass}{color:#b0e0e6}.visible.${scopedClass}{display:block}`);
+    });
+
+    it('No <style> skips scoping', async () => {
+      const $ = index$;
+
+      // Astro component without <style> should not include scoped class
+      expect($('#no-scope').attr('class')).to.equal(undefined);
+    });
+
+    it('Child inheritance', async () => {
+      const $ = index$;
+
+      expect($('#passed-in').attr('class')).to.match(/outer astro-[A-Z0-9]+ astro-[A-Z0-9]+/);
+    });
+
+    it('Using hydrated components adds astro-root styles', async () => {
+      expect(bundledCSS).to.include('display:contents');
+    });
+
+    it('<style lang="sass">', async () => {
+      expect(bundledCSS).to.match(new RegExp('h1.astro-[^{]*{color:#90ee90}'));
+    });
+
+    it('<style lang="scss">', async () => {
+      expect(bundledCSS).to.match(new RegExp('h1.astro-[^{]*{color:#ff69b4}'));
+    });
+  });
+
+  describe('Styles in src/', () => {
+    it('.css', async () => {
+      expect(bundledCSS).to.match(new RegExp('.linked-css[^{]*{color:gold'));
+    });
+
+    it('.sass', async () => {
+      expect(bundledCSS).to.match(new RegExp('.linked-sass[^{]*{color:#789'));
+    });
+
+    it('.scss', async () => {
+      expect(bundledCSS).to.match(new RegExp('.linked-scss[^{]*{color:#6b8e23'));
+    });
+  });
+
+  describe('JSX', () => {
+    it('.css', async () => {
+      const $ = index$;
+      const el = $('#react-css');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('react-title');
+
+      // 2. check CSS
+      expect(bundledCSS).to.include('.react-title{');
+    });
+
+    it('.module.css', async () => {
+      const $ = index$;
+      const el = $('#react-module-css');
+      const classes = el.attr('class').split(' ');
+      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include(moduleClass);
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.${moduleClass}[^{]*{font-family:fantasy}`));
+    });
+
+    it('.sass', async () => {
+      const $ = index$;
+      const el = $('#react-sass');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('react-sass-title');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.react-sass-title[^{]*{font-family:fantasy}`));
+    });
+
+    it('.scss', async () => {
+      const $ = index$;
+      const el = $('#react-scss');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('react-scss-title');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.react-scss-title[^{]*{font-family:fantasy}`));
+    });
+
+    it('.module.sass', async () => {
+      const $ = index$;
+      const el = $('#react-module-sass');
+      const classes = el.attr('class').split(' ');
+      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include(moduleClass);
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.${moduleClass}[^{]*{font-family:fantasy}`));
+    });
+
+    it('.module.scss', async () => {
+      const $ = index$;
+      const el = $('#react-module-scss');
+      const classes = el.attr('class').split(' ');
+      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include(moduleClass);
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.${moduleClass}[^{]*{font-family:fantasy}`));
+    });
+  });
+
+  describe('Vue', () => {
+    it('<style>', async () => {
+      const $ = index$;
+      const el = $('#vue-css');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('vue-css');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.vue-css[^{]*{font-family:cursive`));
+    });
+
+    it('<style scoped>', async () => {
+      const $ = index$;
+      const el = $('#vue-scoped');
+
+      // find data-v-* attribute (how Vue CSS scoping works)
+      const { attribs } = el.get(0);
+      const scopeId = Object.keys(attribs).find((k) => k.startsWith('data-v-'));
+      expect(scopeId).to.be.ok;
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('vue-scoped');
+
+      // 2. check CSS
+      expect(bundledCSS).to.include(`.vue-scoped[${scopeId}]`);
+    });
+
+    it('<style module>', async () => {
+      const $ = index$;
+      const el = $('#vue-modules');
+      const classes = el.attr('class').split(' ');
+      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include(moduleClass);
+
+      // 2. check CSS
+      expect(bundledCSS).to.include(`${moduleClass}{`);
+    });
+
+    it('<style lang="sass">', async () => {
+      const $ = index$;
+      const el = $('#vue-sass');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('vue-sass');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.vue-sass[^{]*{font-family:cursive`));
+    });
+
+    it('<style lang="scss">', async () => {
+      const $ = index$;
+      const el = $('#vue-scss');
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('vue-scss');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.vue-scss[^{]*{font-family:cursive`));
+    });
+  });
+
+  describe('Svelte', () => {
+    it('<style>', async () => {
+      const $ = index$;
+      const el = $('#svelte-css');
+      const classes = el.attr('class').split(' ');
+      const scopedClass = classes.find((name) => /^s-[A-Za-z0-9-]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('svelte-css');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.svelte-css.${scopedClass}[^{]*{font-family:"Comic Sans MS"`));
+    });
+
+    // TODO: fix Sass in Svelte
+    it.skip('<style lang="sass">', async () => {
+      const $ = index$;
+      const el = $('#svelte-sass');
+      const classes = el.attr('class').split(' ');
+      const scopedClass = classes.find((name) => /^s-[A-Za-z0-9-]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('svelte-sass');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.svelte-sass.${scopedClass}[^{]*{font-family:"Comic Sans MS"`));
+    });
+
+    // TODO: fix Sass in Svelte
+    it.skip('<style lang="scss">', async () => {
+      const $ = index$;
+      const el = $('#svelte-scss');
+      const classes = el.attr('class').split(' ');
+      const scopedClass = classes.find((name) => /^s-[A-Za-z0-9-]+/.test(name));
+
+      // 1. check HTML
+      expect(el.attr('class')).to.include('svelte-scss');
+
+      // 2. check CSS
+      expect(bundledCSS).to.match(new RegExp(`.svelte-scss.${scopedClass}[^{]*{font-family:"Comic Sans MS"`));
+    });
+  });
+});
diff --git a/packages/astro/test/astro-styles-ssr.test.js b/packages/astro/test/astro-styles-ssr.test.js
deleted file mode 100644
index 1cc957984..000000000
--- a/packages/astro/test/astro-styles-ssr.test.js
+++ /dev/null
@@ -1,141 +0,0 @@
-import { expect } from 'chai';
-import cheerio from 'cheerio';
-import { loadFixture } from './test-utils.js';
-
-describe('Styles SSR', function () {
-  let fixture;
-  let index$;
-  let bundledCSS;
-
-  before(async () => {
-    fixture = await loadFixture({
-      projectRoot: './fixtures/astro-styles-ssr/',
-      renderers: ['@astrojs/renderer-react', '@astrojs/renderer-svelte', '@astrojs/renderer-vue'],
-    });
-    await fixture.build();
-
-    // get bundled CSS (will be hashed, hence DOM query)
-    const html = await fixture.readFile('/index.html');
-    index$ = cheerio.load(html);
-    const bundledCSSHREF = index$('link[rel=stylesheet][href^=assets/]').attr('href');
-    bundledCSS = await fixture.readFile(bundledCSSHREF.replace(/^\/?/, '/'));
-  });
-
-  describe('Astro styles', () => {
-    it('HTML and CSS scoped correctly', async () => {
-      const $ = index$;
-
-      const el1 = $('#dynamic-class');
-      const el2 = $('#dynamic-vis');
-      const classes = $('#class').attr('class').split(' ');
-      const scopedClass = classes.find((name) => /^astro-[A-Za-z0-9-]+/.test(name));
-
-      // 1. check HTML
-      expect(el1.attr('class')).to.equal(`blue ${scopedClass}`);
-      expect(el2.attr('class')).to.equal(`visible ${scopedClass}`);
-
-      // 2. check CSS
-      expect(bundledCSS).to.include(`.blue.${scopedClass}{color:#b0e0e6}.color\\:blue.${scopedClass}{color:#b0e0e6}.visible.${scopedClass}{display:block}`);
-    });
-
-    it('No <style> skips scoping', async () => {
-      const $ = index$;
-
-      // Astro component without <style> should not include scoped class
-      expect($('#no-scope').attr('class')).to.equal(undefined);
-    });
-
-    it('Child inheritance', async () => {
-      const $ = index$;
-
-      expect($('#passed-in').attr('class')).to.match(/outer astro-[A-Z0-9]+ astro-[A-Z0-9]+/);
-    });
-
-    it('Using hydrated components adds astro-root styles', async () => {
-      expect(bundledCSS).to.include('display:contents');
-    });
-  });
-
-  describe('JSX', () => {
-    it('CSS', async () => {
-      const $ = index$;
-      const el = $('#react-css');
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include('react-title');
-
-      // 2. check CSS
-      expect(bundledCSS).to.include('.react-title{');
-    });
-
-    it('CSS Modules', async () => {
-      const $ = index$;
-      const el = $('#react-modules');
-      const classes = el.attr('class').split(' ');
-      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include(moduleClass);
-
-      // 2. check CSS
-      expect(bundledCSS).to.include(`.${moduleClass}{`);
-    });
-  });
-
-  describe('Vue', () => {
-    it('CSS', async () => {
-      const $ = index$;
-      const el = $('#vue-css');
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include('vue-title');
-
-      // 2. check CSS
-      expect(bundledCSS).to.include('.vue-title{');
-    });
-
-    it('Scoped styles', async () => {
-      const $ = index$;
-      const el = $('#vue-scoped');
-
-      // find data-v-* attribute (how Vue CSS scoping works)
-      const { attribs } = el.get(0);
-      const scopeId = Object.keys(attribs).find((k) => k.startsWith('data-v-'));
-      expect(scopeId).to.be.ok;
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include('vue-scoped');
-
-      // 2. check CSS
-      expect(bundledCSS).to.include(`.vue-scoped[${scopeId}]`);
-    });
-
-    it('CSS Modules', async () => {
-      const $ = index$;
-      const el = $('#vue-modules');
-      const classes = el.attr('class').split(' ');
-      const moduleClass = classes.find((name) => /^_title_[A-Za-z0-9-_]+/.test(name));
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include(moduleClass);
-
-      // 2. check CSS
-      expect(bundledCSS).to.include(`${moduleClass}{`);
-    });
-  });
-
-  describe('Svelte', () => {
-    it('Scoped styles', async () => {
-      const $ = index$;
-      const el = $('#svelte-scoped');
-      const classes = el.attr('class').split(' ');
-      const scopedClass = classes.find((name) => /^s-[A-Za-z0-9-]+/.test(name));
-
-      // 1. check HTML
-      expect(el.attr('class')).to.include('svelte-title');
-
-      // 2. check CSS
-      expect(bundledCSS).to.include(`.svelte-title.${scopedClass}`);
-    });
-  });
-});
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/Astro.astro b/packages/astro/test/fixtures/0-css/src/components/Astro.astro
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/Astro.astro
rename to packages/astro/test/fixtures/0-css/src/components/Astro.astro
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/AstroNone.astro b/packages/astro/test/fixtures/0-css/src/components/AstroNone.astro
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/AstroNone.astro
rename to packages/astro/test/fixtures/0-css/src/components/AstroNone.astro
diff --git a/packages/astro/test/fixtures/0-css/src/components/AstroSass.astro b/packages/astro/test/fixtures/0-css/src/components/AstroSass.astro
new file mode 100644
index 000000000..75d9590e6
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/AstroSass.astro
@@ -0,0 +1,8 @@
+<style lang="sass">
+  $color: #90ee90
+
+  h1
+    color: $color
+</style>
+
+<h1>Color</h1>
diff --git a/packages/astro/test/fixtures/0-css/src/components/AstroScss.astro b/packages/astro/test/fixtures/0-css/src/components/AstroScss.astro
new file mode 100644
index 000000000..f7ddd71d7
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/AstroScss.astro
@@ -0,0 +1,9 @@
+<style lang="scss">
+  $color: #ff69b4;
+
+  h1 {
+    color: $color;
+  }
+</style>
+
+<h1>Color</h1>
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactCSS.css b/packages/astro/test/fixtures/0-css/src/components/ReactCSS.css
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactCSS.css
rename to packages/astro/test/fixtures/0-css/src/components/ReactCSS.css
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactCSS.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactCSS.jsx
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactCSS.jsx
rename to packages/astro/test/fixtures/0-css/src/components/ReactCSS.jsx
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactDynamic.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactDynamic.jsx
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactDynamic.jsx
rename to packages/astro/test/fixtures/0-css/src/components/ReactDynamic.jsx
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactModules.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactModules.jsx
similarity index 76%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactModules.jsx
rename to packages/astro/test/fixtures/0-css/src/components/ReactModules.jsx
index b3aef6bb2..1d13dc2c4 100644
--- a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactModules.jsx
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactModules.jsx
@@ -3,7 +3,7 @@ import Styles from './ReactModules.module.css';
 
 function ReactModules() {
   return (
-    <h1 id="react-modules" className={Styles.title}>
+    <h1 id="react-module-css" className={Styles.title}>
       React Modules
     </h1>
   );
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactModules.module.css b/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.css
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/ReactModules.module.css
rename to packages/astro/test/fixtures/0-css/src/components/ReactModules.module.css
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.sass b/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.sass
new file mode 100644
index 000000000..921ff903a
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.sass
@@ -0,0 +1,4 @@
+$font-family: fantasy
+
+.title
+  font-family: $font-family
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.scss b/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.scss
new file mode 100644
index 000000000..03c6d1090
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactModules.module.scss
@@ -0,0 +1,5 @@
+$font-family: fantasy;
+
+.title {
+  font-family: $font-family;
+}
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactModulesSass.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactModulesSass.jsx
new file mode 100644
index 000000000..bd5436168
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactModulesSass.jsx
@@ -0,0 +1,11 @@
+import React from 'react';
+import Styles from './ReactModules.module.sass';
+
+function ReactModules() {
+  return (
+    <h1 id="react-module-sass" className={Styles.title}>
+      React Modules
+    </h1>
+  );
+}
+export default ReactModules;
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactModulesScss.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactModulesScss.jsx
new file mode 100644
index 000000000..8965e349d
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactModulesScss.jsx
@@ -0,0 +1,11 @@
+import React from 'react';
+import Styles from './ReactModules.module.scss';
+
+function ReactModules() {
+  return (
+    <h1 id="react-module-scss" className={Styles.title}>
+      React Modules
+    </h1>
+  );
+}
+export default ReactModules;
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactSass.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactSass.jsx
new file mode 100644
index 000000000..79e2383f2
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactSass.jsx
@@ -0,0 +1,11 @@
+import React from 'react';
+import './ReactSass.sass';
+
+function ReactCSS() {
+  return (
+    <h1 id="react-sass" className="react-sass-title">
+      React Global Sass
+    </h1>
+  );
+}
+export default ReactCSS;
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactSass.sass b/packages/astro/test/fixtures/0-css/src/components/ReactSass.sass
new file mode 100644
index 000000000..0ba8bd115
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactSass.sass
@@ -0,0 +1,5 @@
+$font-family: fantasy
+
+.react-sass-title
+  font-family: $font-family
+
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactScss.jsx b/packages/astro/test/fixtures/0-css/src/components/ReactScss.jsx
new file mode 100644
index 000000000..cff5763e2
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactScss.jsx
@@ -0,0 +1,11 @@
+import React from 'react';
+import './ReactScss.scss';
+
+function ReactCSS() {
+  return (
+    <h1 id="react-scss" className="react-scss-title">
+      React Global Scss
+    </h1>
+  );
+}
+export default ReactCSS;
diff --git a/packages/astro/test/fixtures/0-css/src/components/ReactScss.scss b/packages/astro/test/fixtures/0-css/src/components/ReactScss.scss
new file mode 100644
index 000000000..0b3762956
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/ReactScss.scss
@@ -0,0 +1,6 @@
+$font-family: fantasy;
+
+.react-scss-title {
+  font-family: $font-family;
+}
+
diff --git a/packages/astro/test/fixtures/0-css/src/components/SvelteCSS.svelte b/packages/astro/test/fixtures/0-css/src/components/SvelteCSS.svelte
new file mode 100644
index 000000000..b02001758
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/SvelteCSS.svelte
@@ -0,0 +1,7 @@
+<h1 id="svelte-css" class="svelte-css">Svelte Scoped CSS</h1>
+
+<style>
+  .svelte-css {
+    font-family: 'Comic Sans MS', sans-serif;
+  }
+</style>
diff --git a/packages/astro/test/fixtures/0-css/src/components/SvelteSass.svelte b/packages/astro/test/fixtures/0-css/src/components/SvelteSass.svelte
new file mode 100644
index 000000000..35249e69b
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/SvelteSass.svelte
@@ -0,0 +1,8 @@
+<h1 id="svelte-sass" class="svelte-sass">Svelte Scoped Sass</h1>
+
+<style lang="sass">
+  $font-family: 'Comic Sans MS', sans-serif
+
+  .svelte-sass
+    font-family: $font-family
+</style>
diff --git a/packages/astro/test/fixtures/0-css/src/components/SvelteScss.svelte b/packages/astro/test/fixtures/0-css/src/components/SvelteScss.svelte
new file mode 100644
index 000000000..ac2145d58
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/SvelteScss.svelte
@@ -0,0 +1,9 @@
+<h1 id="svelte-scss" class="svelte-scss">Svelte Scoped Scss</h1>
+
+<style lang="scss">
+  $font-family: 'Comic Sans MS', sans-serif;
+
+  .svelte-scss {
+    font-family: $font-family;
+  }
+</style>
diff --git a/packages/astro/test/fixtures/0-css/src/components/VueCSS.vue b/packages/astro/test/fixtures/0-css/src/components/VueCSS.vue
new file mode 100644
index 000000000..ded98858f
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/VueCSS.vue
@@ -0,0 +1,9 @@
+<style>
+.vue-css {
+  font-family: cursive;
+}
+</style>
+
+<template>
+  <h1 id="vue-css" class="vue-css">Vue Global CSS</h1>
+</template>
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/VueModules.vue b/packages/astro/test/fixtures/0-css/src/components/VueModules.vue
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/VueModules.vue
rename to packages/astro/test/fixtures/0-css/src/components/VueModules.vue
diff --git a/packages/astro/test/fixtures/0-css/src/components/VueSass.vue b/packages/astro/test/fixtures/0-css/src/components/VueSass.vue
new file mode 100644
index 000000000..a4cac8008
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/VueSass.vue
@@ -0,0 +1,10 @@
+<style lang="sass">
+$font-family: cursive
+
+.vue-sass
+  font-family: $font-family
+</style>
+
+<template>
+  <h1 id="vue-sass" class="vue-sass">Vue Sass</h1>
+</template>
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/VueScoped.vue b/packages/astro/test/fixtures/0-css/src/components/VueScoped.vue
similarity index 100%
rename from packages/astro/test/fixtures/astro-styles-ssr/src/components/VueScoped.vue
rename to packages/astro/test/fixtures/0-css/src/components/VueScoped.vue
diff --git a/packages/astro/test/fixtures/0-css/src/components/VueScss.vue b/packages/astro/test/fixtures/0-css/src/components/VueScss.vue
new file mode 100644
index 000000000..83395d4f3
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/components/VueScss.vue
@@ -0,0 +1,11 @@
+<style lang="scss">
+$font-family: cursive;
+
+.vue-scss {
+  font-family: $font-family;
+}
+</style>
+
+<template>
+  <h1 id="vue-scss" class="vue-scss">Vue Sass</h1>
+</template>
diff --git a/packages/astro/test/fixtures/0-css/src/pages/index.astro b/packages/astro/test/fixtures/0-css/src/pages/index.astro
new file mode 100644
index 000000000..599632065
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/pages/index.astro
@@ -0,0 +1,63 @@
+---
+import AstroComponent from '../components/Astro.astro';
+import AstroComponentNone from '../components/AstroNone.astro';
+import AstroSass from '../components/AstroSass.astro';
+import AstroScss from '../components/AstroScss.astro';
+import ReactCSS from '../components/ReactCSS.jsx';
+import ReactModules from '../components/ReactModules.jsx';
+import ReactModulesSass from '../components/ReactModulesSass.jsx';
+import ReactModulesScss from '../components/ReactModulesScss.jsx';
+import ReactSass from '../components/ReactSass.jsx';
+import ReactScss from '../components/ReactScss.jsx';
+import VueCSS from '../components/VueCSS.vue';
+import VueModules from '../components/VueModules.vue';
+import VueSass from '../components/VueSass.vue';
+import VueScoped from '../components/VueScoped.vue';
+import VueScss from '../components/VueScss.vue';
+import SvelteCSS from '../components/SvelteCSS.svelte';
+// import SvelteSass from '../components/SvelteSass.svelte';
+// import SvelteScss from '../components/SvelteScss.svelte';
+import ReactDynamic from '../components/ReactDynamic.jsx';
+---
+
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <style lang="scss">
+      .wrapper {
+        margin-left: auto;
+        margin-right: auto;
+        max-width: 1200px;
+      }
+      .outer {
+        color: red;
+      }
+    </style>
+    <link rel="stylesheet" type="text/css" href={Astro.resolve('../styles/linked.css')}>
+    <link rel="stylesheet" type="text/css" href={Astro.resolve('../styles/linked.scss')}>
+    <link rel="stylesheet" type="text/css" href={Astro.resolve('../styles/linked.sass')}>
+  </head>
+  <body>
+    <div class="wrapper">
+      <AstroComponent class="outer" />
+      <AstroComponentNone />
+      <AstroSass />
+      <AstroScss />
+      <ReactCSS />
+      <ReactModules />
+      <ReactModulesSass />
+      <ReactModulesScss />
+      <ReactSass />
+      <ReactScss />
+      <VueCSS />
+      <VueModules />
+      <VueSass />
+      <VueScoped />
+      <VueScss />
+      <SvelteCSS />
+      <!-- <SvelteSass />
+      <SvelteScss /> -->
+      <ReactDynamic client:load />
+    </div>
+  </body>
+</html>
diff --git a/packages/astro/test/fixtures/0-css/src/styles/linked.css b/packages/astro/test/fixtures/0-css/src/styles/linked.css
new file mode 100644
index 000000000..5a782901d
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/styles/linked.css
@@ -0,0 +1,3 @@
+.linked-css {
+  color: gold;
+}
diff --git a/packages/astro/test/fixtures/0-css/src/styles/linked.sass b/packages/astro/test/fixtures/0-css/src/styles/linked.sass
new file mode 100644
index 000000000..4cc146850
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/styles/linked.sass
@@ -0,0 +1,2 @@
+.linked-sass
+  color: #778899
diff --git a/packages/astro/test/fixtures/0-css/src/styles/linked.scss b/packages/astro/test/fixtures/0-css/src/styles/linked.scss
new file mode 100644
index 000000000..e35bcd210
--- /dev/null
+++ b/packages/astro/test/fixtures/0-css/src/styles/linked.scss
@@ -0,0 +1,3 @@
+.linked-scss {
+  color: #6b8e23;
+}
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/SvelteScoped.svelte b/packages/astro/test/fixtures/astro-styles-ssr/src/components/SvelteScoped.svelte
deleted file mode 100644
index 6e35a4c0d..000000000
--- a/packages/astro/test/fixtures/astro-styles-ssr/src/components/SvelteScoped.svelte
+++ /dev/null
@@ -1,7 +0,0 @@
-<h1 id="svelte-scoped" class="svelte-title">Svelte Scoped CSS</h1>
-
-<style lang="scss">
-  .svelte-title {
-    font-family: 'Comic Sans MS', sans-serif;
-  }
-</style>
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/components/VueCSS.vue b/packages/astro/test/fixtures/astro-styles-ssr/src/components/VueCSS.vue
deleted file mode 100644
index 23ac9a291..000000000
--- a/packages/astro/test/fixtures/astro-styles-ssr/src/components/VueCSS.vue
+++ /dev/null
@@ -1,9 +0,0 @@
-<style>
-.vue-title {
-  font-family: cursive;
-}
-</style>
-
-<template>
-  <h1 id="vue-css" class="vue-title">Vue Global CSS</h1>
-</template>
diff --git a/packages/astro/test/fixtures/astro-styles-ssr/src/pages/index.astro b/packages/astro/test/fixtures/astro-styles-ssr/src/pages/index.astro
deleted file mode 100644
index 345d1b5bc..000000000
--- a/packages/astro/test/fixtures/astro-styles-ssr/src/pages/index.astro
+++ /dev/null
@@ -1,40 +0,0 @@
----
-import AstroComponent from '../components/Astro.astro';
-import AstroComponentNone from '../components/AstroNone.astro';
-import ReactCSS from '../components/ReactCSS.jsx';
-import ReactModules from '../components/ReactModules.jsx';
-import VueCSS from '../components/VueCSS.vue';
-import VueScoped from '../components/VueScoped.vue';
-import VueModules from '../components/VueModules.vue';
-import SvelteScoped from '../components/SvelteScoped.svelte';
-import ReactDynamic from '../components/ReactDynamic.jsx';
----
-
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <style lang="scss">
-      .wrapper {
-        margin-left: auto;
-        margin-right: auto;
-        max-width: 1200px;
-      }
-      .outer {
-        color: red;
-      }
-    </style>
-  </head>
-  <body>
-    <div class="wrapper">
-      <AstroComponent class="outer" />
-      <AstroComponentNone />
-      <ReactCSS />
-      <ReactModules />
-      <VueCSS />
-      <VueScoped />
-      <VueModules />
-      <SvelteScoped />
-      <ReactDynamic client:load />
-    </div>
-  </body>
-</html>
diff --git a/yarn.lock b/yarn.lock
index 3542bf4c6..35575082e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8906,7 +8906,7 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.2, safe-buffer@^5.2.1,
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
 
-sass@^1.43.3:
+sass@^1.43.4:
   version "1.43.4"
   resolved "https://registry.yarnpkg.com/sass/-/sass-1.43.4.tgz#68c7d6a1b004bef49af0d9caf750e9b252105d1f"
   integrity sha512-/ptG7KE9lxpGSYiXn7Ar+lKOv37xfWsZRtFYal2QHNigyVQDx685VFT/h7ejVr+R8w7H4tmUgtulsKl5YpveOg==