diff --git a/bin/globalize-css.js b/bin/globalize-css.js
new file mode 100755
index 00000000..e7218488
--- /dev/null
+++ b/bin/globalize-css.js
@@ -0,0 +1,46 @@
+#!/usr/bin/env node
+// Change all the Svelte CSS to just use globals everywhere,
+// to reduce CSS size and complexity.
+
+const argv = require('yargs').argv
+const path = require('path')
+const fs = require('fs')
+const pify = require('pify')
+const writeFile = pify(fs.writeFile.bind(fs))
+const readFile = pify(fs.readFile.bind(fs))
+const glob = pify(require('glob'))
+const rimraf = pify(require('rimraf'))
+
+const selectorRegex = /\n[ \t]*([0-9\w\- \t\.:#,]+?)[ \t]*\{/g
+const styleRegex = /<style>[\s\S]+?<\/style>/
+
+async function main() {
+  if (argv.reverse) { // reverse the operation we just did
+    let tmpComponents = await glob('./routes/**/.tmp-*.html')
+    for (let filename of tmpComponents) {
+      let text = await readFile(filename, 'utf8')
+      await rimraf(filename)
+      let originalFilename = path.join(path.dirname(filename), path.basename(filename).substring(5))
+      await writeFile(originalFilename, text, 'utf8')
+    }
+  } else { // read all files, copy to tmp files, rewrite files to include global CSS everywhere
+    let components = await glob('./routes/**/*.html')
+    for (let filename of components) {
+      let text = await readFile(filename, 'utf8')
+      let newText = text.replace(styleRegex, style => {
+        return style.replace(selectorRegex, selectorMatch => {
+          return selectorMatch.replace(/\S[^\{]+/, selector => `:global(${selector})`)
+        })
+      })
+      let newFilename = path.join(path.dirname(filename), '.tmp-' + path.basename(filename))
+
+      await writeFile(newFilename, text, 'utf8')
+      await writeFile(filename, newText, 'utf8')
+    }
+  }
+}
+
+Promise.resolve().then(main).catch(err => {
+  console.error(err)
+  process.exit(1)
+})
\ No newline at end of file
diff --git a/package.json b/package.json
index 57259554..be78e0a9 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,9 @@
     "build-sass-watch": "node ./bin/build-sass --watch",
     "cy:run": "cypress run",
     "cy:open": "cypress open",
-    "test": "run-p --race dev cy:run"
+    "test": "run-p --race dev cy:run",
+    "globalize-css": "node ./bin/globalize-css.js",
+    "deglobalize-css": "node ./bin/globalize-css.js --reverse"
   },
   "dependencies": {
     "chokidar": "^2.0.0",
@@ -36,6 +38,7 @@
     "performance-now": "^2.1.0",
     "pify": "^3.0.0",
     "requestidlecallback": "^0.3.0",
+    "rimraf": "^2.6.2",
     "sapper": "^0.3.2",
     "serve-static": "^1.13.1",
     "style-loader": "^0.19.1",
diff --git a/routes/_components/LoadingSpinner.html b/routes/_components/LoadingSpinner.html
index 24ec64ee..37752e46 100644
--- a/routes/_components/LoadingSpinner.html
+++ b/routes/_components/LoadingSpinner.html
@@ -1,15 +1,15 @@
-<svg class="{{maskStyle ? 'mask-style' : ''}}">
+<svg class="loading-spinner-icon {{maskStyle ? 'mask-style' : ''}}">
   <use xlink:href="#fa-spinner" />
 </svg>
 <style>
-  svg {
+  .loading-spinner-icon {
     width: 64px;
     height: 64px;
     fill: var(--svg-fill);
     animation: spin 2s infinite linear;
   }
 
-  svg.mask-style {
+  .loading-spinner-icon.mask-style {
     fill: var(--mask-svg-fill);
   }
 
diff --git a/routes/_components/Nav.html b/routes/_components/Nav.html
index 79a845b7..55f60097 100644
--- a/routes/_components/Nav.html
+++ b/routes/_components/Nav.html
@@ -1,4 +1,4 @@
-<nav>
+<nav class="main-nav">
 	<ul>
 		<li>
       <NavItem :page name="home" href="/" svg="#pinafore-logo" label="Home" />
@@ -19,7 +19,7 @@
 </nav>
 
 <style>
-	nav {
+	.main-nav {
 		border-bottom: 1px solid var(--nav-border);
 		background: var(--nav-bg);
 		position: fixed;
@@ -29,7 +29,7 @@
 		z-index: 10;
 	}
 
-	ul {
+  .main-nav ul {
 		margin: 0;
 		padding: 0;
 		list-style: none;
@@ -38,7 +38,7 @@
 	}
 
 	@media (max-width: 767px) {
-    li {
+    .main-nav li {
       flex-basis: 100%;
     }
 	}
diff --git a/routes/_components/NavItem.html b/routes/_components/NavItem.html
index 81deab4e..46f79ce0 100644
--- a/routes/_components/NavItem.html
+++ b/routes/_components/NavItem.html
@@ -1,4 +1,4 @@
-<a class='{{page === name ? "selected" : ""}}'
+<a class='main-nav-link {{page === name ? "selected" : ""}}'
    aria-label='{{page === name ? `${label} (current page)` : label}}'
    aria-current="{{page === name}}"
    href='{{href}}'>
@@ -8,7 +8,7 @@
   <span>{{label}}</span>
 </a>
 <style>
-  a {
+  .main-nav-link {
     border-bottom: 1px solid var(--nav-a-border);
     text-decoration: none;
     padding: 25px 20px;
@@ -17,46 +17,46 @@
     align-items: center;
   }
 
-  a.selected {
+  .main-nav-link.selected {
     border-bottom: 1px solid var(--nav-a-selected-border);
     background: var(--nav-a-selected-bg);
   }
 
-  a.selected:hover {
+  .main-nav-link.selected:hover {
     border-bottom: 1px solid var(--nav-a-selected-border-hover);
     background: var(--nav-a-selected-bg-hover);
   }
 
-  a:hover {
+  .main-nav-link:hover {
     background-color: var(--nav-a-bg-hover);
     border-bottom: 1px solid var(--nav-a-border-hover);
   }
 
-  a:hover span {
+  .main-nav-link:hover span {
     color: var(--nav-text-color-hover);
   }
-  a:hover svg {
+  .main-nav-link:hover svg {
     fill: var(--nav-svg-fill-hover);
   }
 
-  svg {
+  .main-nav-link svg {
     width: 20px;
     height: 20px;
     display: inline-block;
     fill: var(--nav-svg-fill);
   }
 
-  span {
+  .main-nav-link span {
     font-size: 16px;
     color: var(--nav-text-color);
     padding-left: 10px;
   }
 
   @media (max-width: 767px) {
-    span {
+    .main-nav-link span {
       display: none;
     }
-    svg {
+    .main-nav-link svg {
       width: 25px;
       height: 25px;
     }
diff --git a/routes/_components/NotLoggedInHome.html b/routes/_components/NotLoggedInHome.html
index a196c390..075b9063 100644
--- a/routes/_components/NotLoggedInHome.html
+++ b/routes/_components/NotLoggedInHome.html
@@ -17,18 +17,18 @@
   .not-logged-in-home {
     margin: 10px;
   }
-  .banner {
+  .not-logged-in-home .banner {
     display: flex;
     align-items: center;
     margin: 0 0 30px;
   }
-  svg {
+  .not-logged-in-home svg {
     width: 70px;
     height: 70px;
     fill: royalblue;
     display: inline-block;
   }
-  h1 {
+  .not-logged-in-home h1 {
     color: royalblue;
     display: inline-block;
     font-size: 3em;
@@ -36,7 +36,7 @@
   }
 
   @media (max-width: 767px) {
-    h1 {
+    .not-logged-in-home h1 {
       font-size: 2.7em;
     }
   }
diff --git a/routes/_components/VirtualListItem.html b/routes/_components/VirtualListItem.html
index c4a0a1c1..525a0997 100644
--- a/routes/_components/VirtualListItem.html
+++ b/routes/_components/VirtualListItem.html
@@ -13,7 +13,7 @@
     pointer-events: none;
     /* will-change: transform; */ /* causes jank in mobile Firefox */
   }
-  .shown {
+  .virtual-list-item.shown {
     opacity: 1;
     pointer-events: auto;
   }
diff --git a/routes/settings/_components/SettingsList.html b/routes/settings/_components/SettingsList.html
index 2e5e5060..4e4fcb54 100644
--- a/routes/settings/_components/SettingsList.html
+++ b/routes/settings/_components/SettingsList.html
@@ -1,8 +1,8 @@
-<ul>
+<ul class="settings-list">
   <slot></slot>
 </ul>
 <style>
-  ul {
+  ul.settings-list {
     list-style: none;
     width: 100%;
     border: 1px solid var(--settings-list-item-border);
@@ -10,7 +10,7 @@
   }
 
   @media (min-width: 768px) {
-    ul {
+    ul.settings-list {
       max-width: 80%;
     }
   }
diff --git a/routes/settings/_components/SettingsListItem.html b/routes/settings/_components/SettingsListItem.html
index 596ffb8a..48c07405 100644
--- a/routes/settings/_components/SettingsListItem.html
+++ b/routes/settings/_components/SettingsListItem.html
@@ -1,4 +1,4 @@
-<li>
+<li class="settings-list-item">
   <a :href>
     {{#if icon}}
     <svg>
@@ -11,36 +11,36 @@
   </a>
 </li>
 <style>
-  li {
+  li.settings-list-item {
     border: 1px solid var(--settings-list-item-border);
     font-size: 1.3em;
     display: flex;
     flex-direction: column;
   }
-  a {
+  .settings-list-item a {
     display: flex;
     padding: 20px;
     background: var(--settings-list-item-bg);
   }
-  a, a:visited {
+  .settings-list-item a, .settings-list-item a:visited {
     color: var(--settings-list-item-text);
   }
-  a:hover {
+  .settings-list-item a:hover {
     text-decoration: none;
     background: var(--settings-list-item-bg-hover);
     color: var(--settings-list-item-text-hover);
   }
-  a:active {
+  .settings-list-item a:active {
     background: var(--settings-list-item-bg-active);
   }
-  svg {
+  .settings-list-item svg {
     width: 24px;
     height: 24px;
     display: inline-block;
     margin-right: 20px;
     fill: var(--svg-fill);
   }
-  .offset-for-icon {
+  .settings-list-item .offset-for-icon {
     margin-left: 44px;
   }
 
diff --git a/routes/settings/_components/SettingsNav.html b/routes/settings/_components/SettingsNav.html
index 3b038541..f0989be3 100644
--- a/routes/settings/_components/SettingsNav.html
+++ b/routes/settings/_components/SettingsNav.html
@@ -1,4 +1,4 @@
-<nav>
+<nav class="settings-nav">
   <ul>
     {{#each navItems as navItem}}
     <li>
@@ -12,25 +12,25 @@
 </nav>
 
 <style>
-  ul {
+  .settings-nav ul {
     margin: 5px 20px;
     padding: 0;
     list-style: none;
   }
 
-  li {
+  .settings-nav li {
     margin: 5px 0;
     font-size: 1em;
     display: inline-block;
   }
 
-  li::after {
+  .settings-nav li::after {
     content: '>';
     margin: 0 15px;
     color: var(--anchor-text);
   }
 
-  li:last-child::after {
+  .settings-nav li:last-child::after {
     content: '';
     margin-left: 0;
     font-size: 1em;
diff --git a/routes/settings/_components/SettingsNavItem.html b/routes/settings/_components/SettingsNavItem.html
index 56457fca..07fd7421 100644
--- a/routes/settings/_components/SettingsNavItem.html
+++ b/routes/settings/_components/SettingsNavItem.html
@@ -1,12 +1,12 @@
-<a class='{{getCurrentClass(page, name)}}' aria-label='{{getAriaLabel(page, name, label)}}' href='{{href}}'>
+<a class='settings-nav-item {{getCurrentClass(page, name)}}' aria-label='{{getAriaLabel(page, name, label)}}' href='{{href}}'>
   {{label}}
 </a>
 <style>
-  a {
+  a.settings-nav-item {
     font-size: 1.2em;
   }
 
-  a.selected {
+  a.settings-nav-item.selected {
     font-weight: 600;
   }
 </style>
diff --git a/routes/settings/instances/add.html b/routes/settings/instances/add.html
index 2bebdd98..676c2291 100644
--- a/routes/settings/instances/add.html
+++ b/routes/settings/instances/add.html
@@ -16,7 +16,7 @@
 
     <form class="add-new-instance" on:submit='onSubmit(event)' aria-labelledby="add-an-instance-h1">
       <label for="instanceInput">Instance:</label>
-      <input type="text" id="instanceInput" bind:value='$instanceNameInSearch' placeholder=''>
+      <input class="new-instance-input" type="text" id="instanceInput" bind:value='$instanceNameInSearch' placeholder=''>
       <button class="primary" type="submit" id="submitButton" disabled="{{!$instanceNameInSearch}}">Add instance</button>
     </form>
 
@@ -27,12 +27,12 @@
 </Layout>
 <style>
   @media (max-width: 767px) {
-    input {
+    input.new-instance-input {
       max-width: 90%;
     }
   }
 
-  input {
+  input.new-instance-input {
     min-width: 50%;
     max-width: 100%;
   }