ui: Move component styling into CSS modules

This change updates the frontend codebase by moving the component
styling into CSS module files as opposed to the global styles which we
used before. In addition, I have changed the syntax to the newer SCSS
syntax, which is more similar to CSS.

These changes reduces the styling conflicts that can occur between
components and allows us to migrate to systems that do not support
importing global styles in components. Moreover, we can benefit from
treeshaking using CSS modules.

9 files changed, 89 insertions, 119 deletions

diff --git a/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.js b/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.js
index dbdba212..03a4894b 100644
--- a/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.js
+++ b/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.js
@@ -1,6 +1,6 @@
 import React from 'react'
-import './BlinkingCursor.sass'
+import { blinkingCursor } from './BlinkingCursor.module.scss'
 
-const BlinkingCursor = () => <span className="blinking-cursor">_</span>
+const BlinkingCursor = () => <span className={blinkingCursor}>_</span>
 
 export default BlinkingCursor
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.module.scss b/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.module.scss
new file mode 100644
index 00000000..aba0c604
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.module.scss
@@ -0,0 +1,13 @@
+.blinkingCursor {
+    animation: blink 1s step-end infinite;
+}
+
+@keyframes blink {
+    from,
+    to {
+        color: #eeeeee;
+    }
+    50% {
+        color: #333333;
+    }
+}
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.sass b/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.sass
deleted file mode 100644
index ad91df85..00000000
--- a/opendc-web/opendc-web-ui/src/components/not-found/BlinkingCursor.sass
+++ /dev/null
@@ -1,35 +0,0 @@
-.blinking-cursor
-    -webkit-animation: 1s blink step-end infinite
-    -moz-animation: 1s blink step-end infinite
-    -o-animation: 1s blink step-end infinite
-    animation: 1s blink step-end infinite
-
-@keyframes blink
-    from, to
-        color: #eeeeee
-    50%
-        color: #333333
-
-@-moz-keyframes blink
-    from, to
-        color: #eeeeee
-    50%
-        color: #333333
-
-@-webkit-keyframes blink
-    from, to
-        color: #eeeeee
-    50%
-        color: #333333
-
-@-ms-keyframes blink
-    from, to
-        color: #eeeeee
-    50%
-        color: #333333
-
-@-o-keyframes blink
-    from, to
-        color: #eeeeee
-    50%
-        color: #333333
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.js b/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.js
index bcc522c9..6ded4350 100644
--- a/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.js
+++ b/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.js
@@ -1,5 +1,5 @@
 import React from 'react'
-import './CodeBlock.sass'
+import { codeBlock } from './CodeBlock.module.scss'
 
 const CodeBlock = () => {
     const textBlock =
@@ -22,7 +22,7 @@ const CodeBlock = () => {
         }
     }
 
-    return <div className="code-block" dangerouslySetInnerHTML={{ __html: textBlock }} />
+    return <div className={codeBlock} dangerouslySetInnerHTML={{ __html: textBlock }} />
 }
 
 export default CodeBlock
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.module.scss b/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.module.scss
new file mode 100644
index 00000000..8af3ee6d
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.module.scss
@@ -0,0 +1,4 @@
+.codeBlock {
+    white-space: pre-wrap;
+    margin-top: 60px;
+}
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.sass b/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.sass
deleted file mode 100644
index e452f917..00000000
--- a/opendc-web/opendc-web-ui/src/components/not-found/CodeBlock.sass
+++ /dev/null
@@ -1,3 +0,0 @@
-.code-block
-    white-space: pre-wrap
-    margin-top: 60px
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.js b/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.js
index a25e558a..b38fc183 100644
--- a/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.js
+++ b/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.js
@@ -2,13 +2,13 @@ import React from 'react'
 import { Link } from 'react-router-dom'
 import BlinkingCursor from './BlinkingCursor'
 import CodeBlock from './CodeBlock'
-import './TerminalWindow.sass'
+import { terminalWindow, terminalHeader, terminalBody, segfault, subTitle, homeBtn } from './TerminalWindow.module.scss'
 
 const TerminalWindow = () => (
-    <div className="terminal-window">
-        <div className="terminal-header">Terminal -- bash</div>
-        <div className="terminal-body">
-            <div className="segfault">
+    <div className={terminalWindow}>
+        <div className={terminalHeader}>Terminal -- bash</div>
+        <div className={terminalBody}>
+            <div className={segfault}>
                 $ status
                 <br />
                 opendc[4264]: segfault at 0000051497be459d1 err 12 in libopendc.9.0.4
@@ -19,11 +19,11 @@ const TerminalWindow = () => (
                 <br />
             </div>
             <CodeBlock />
-            <div className="sub-title">
+            <div className={subTitle}>
                 Got lost?
                 <BlinkingCursor />
             </div>
-            <Link to="/" className="home-btn">
+            <Link to="/" className={homeBtn}>
                 <span className="fa fa-home" /> GET ME BACK TO OPENDC
             </Link>
         </div>
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.module.scss b/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.module.scss
new file mode 100644
index 00000000..614852d3
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.module.scss
@@ -0,0 +1,61 @@
+.terminalWindow {
+    display: block;
+    align-self: center;
+
+    margin: auto;
+
+    user-select: none;
+    cursor: default;
+
+    overflow: hidden;
+
+    box-shadow: 5px 5px 20px #444444;
+}
+
+.terminalHeader {
+    font-family: monospace;
+    background: #cccccc;
+    color: #444444;
+    height: 30px;
+    line-height: 30px;
+    padding-left: 10px;
+
+    border-top-left-radius: 7px;
+    border-top-right-radius: 7px;
+}
+
+.terminalBody {
+    font-family: monospace;
+    text-align: center;
+    background-color: #333333;
+    color: #eeeeee;
+    padding: 10px;
+
+    height: 100%;
+}
+
+.segfault {
+    text-align: left;
+}
+
+.subTitle {
+    margin-top: 20px;
+}
+
+.homeBtn {
+    margin-top: 10px;
+    padding: 5px;
+    display: inline-block;
+    border: 1px solid #eeeeee;
+    color: #eeeeee;
+    text-decoration: none;
+    cursor: pointer;
+
+    transition: all 200ms;
+
+    &:hover,
+    &:active {
+        background: #eeeeee;
+        color: #333333;
+    }
+}
diff --git a/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.sass b/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.sass
deleted file mode 100644
index 7f05335a..00000000
--- a/opendc-web/opendc-web-ui/src/components/not-found/TerminalWindow.sass
+++ /dev/null
@@ -1,70 +0,0 @@
-.terminal-window
-    width: 600px
-    height: 400px
-    display: block
-
-    position: absolute
-    top: 0
-    bottom: 0
-    left: 0
-    right: 0
-
-    margin: auto
-
-    -webkit-user-select: none
-    -moz-user-select: none
-    -ms-user-select: none
-    user-select: none
-    cursor: default
-
-    overflow: hidden
-
-    box-shadow: 5px 5px 20px #444444
-
-.terminal-header
-    font-family: monospace
-    background: #cccccc
-    color: #444444
-    height: 30px
-    line-height: 30px
-    padding-left: 10px
-
-    border-top-left-radius: 7px
-    border-top-right-radius: 7px
-
-.terminal-body
-    font-family: monospace
-    text-align: center
-    background-color: #333333
-    color: #eeeeee
-    padding: 10px
-
-    height: 100%
-
-.segfault
-    text-align: left
-
-.sub-title
-    margin-top: 20px
-
-.home-btn
-    margin-top: 10px
-    padding: 5px
-    display: inline-block
-    border: 1px solid #eeeeee
-    color: #eeeeee
-    text-decoration: none
-    cursor: pointer
-
-    -webkit-transition: all 200ms
-    -moz-transition: all 200ms
-    -o-transition: all 200ms
-    transition: all 200ms
-
-.home-btn:hover
-    background: #eeeeee
-    color: #333333
-
-.home-btn:active
-    background: #333333
-    color: #eeeeee