add test page.

src/page/assets/styles/_reset.scss

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+html, body, div, span, applet, object, iframe,
+h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+a, abbr, acronym, address, big, cite, code,
+del, dfn, em, img, ins, kbd, q, s, samp,
+small, strike, strong, sub, sup, tt, var,
+b, u, i, center,
+dl, dt, dd, ol, ul, li,
+fieldset, form, label, legend,
+table, caption, tbody, tfoot, thead, tr, th, td,
+article, aside, canvas, details, embed,
+figure, figcaption, footer, header, hgroup,
+menu, nav, output, ruby, section, summary,
+time, mark, audio, video {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  font: inherit;
+  font-size: 100%;
+  vertical-align: baseline;
+}
+
+/* make sure to set some focus styles for accessibility */
+:focus {
+  outline: 0;
+}
+
+/* HTML5 display-role reset for older browsers */
+article, aside, details, figcaption, figure,
+footer, header, hgroup, menu, nav, section {
+  display: block;
+}
+
+body {
+  line-height: 1;
+}
+
+ol, ul {
+  list-style: none;
+}
+
+blockquote, q {
+  quotes: none;
+}
+
+blockquote:before, blockquote:after,
+q:before, q:after {
+  content: '';
+  content: none;
+}
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+input[type=search]::-webkit-search-cancel-button,
+input[type=search]::-webkit-search-decoration,
+input[type=search]::-webkit-search-results-button,
+input[type=search]::-webkit-search-results-decoration {
+  -webkit-appearance: none;
+  -moz-appearance: none;
+}
+
+input[type=search] {
+  -webkit-appearance: none;
+  -moz-appearance: none;
+  -webkit-box-sizing: content-box;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+}
+
+textarea {
+  overflow: auto;
+  vertical-align: top;
+  resize: vertical;
+}
+
+/**
+* Correct `inline-block` display not defined in IE 6/7/8/9 and Firefox 3.
+*/
+
+audio,
+canvas,
+video {
+  display: inline-block;
+  *display: inline;
+  *zoom: 1;
+  max-width: 100%;
+}
+
+/**
+* Prevent modern browsers from displaying `audio` without controls.
+* Remove excess height in iOS 5 devices.
+*/
+
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+
+/**
+* Address styling not present in IE 7/8/9, Firefox 3, and Safari 4.
+* Known issue: no IE 6 support.
+*/
+
+[hidden] {
+  display: none;
+}
+
+/**
+* 1. Correct text resizing oddly in IE 6/7 when body `font-size` is set using
+*    `em` units.
+* 2. Prevent iOS text size adjust after orientation change, without disabling
+*    user zoom.
+*/
+
+html {
+  font-size: 100%; /* 1 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+  -ms-text-size-adjust: 100%; /* 2 */
+}
+
+/**
+* Address `outline` inconsistency between Chrome and other browsers.
+*/
+
+a:focus {
+  outline: none;
+}
+
+/**
+* Improve readability when focused and also mouse hovered in all browsers.
+*/
+
+a:active,
+a:hover {
+  outline: 0;
+}
+
+/**
+* 1. Remove border when inside `a` element in IE 6/7/8/9 and Firefox 3.
+* 2. Improve image quality when scaled in IE 7.
+*/
+
+img {
+  border: 0; /* 1 */
+  -ms-interpolation-mode: bicubic; /* 2 */
+}
+
+/**
+* Address margin not present in IE 6/7/8/9, Safari 5, and Opera 11.
+*/
+
+figure {
+  margin: 0;
+}
+
+/**
+* Correct margin displayed oddly in IE 6/7.
+*/
+
+form {
+  margin: 0;
+}
+
+/**
+* Define consistent border, margin, and padding.
+*/
+
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/**
+* 1. Correct color not being inherited in IE 6/7/8/9.
+* 2. Correct text not wrapping in Firefox 3.
+* 3. Correct alignment displayed oddly in IE 6/7.
+*/
+
+legend {
+  border: 0; /* 1 */
+  padding: 0;
+  white-space: normal; /* 2 */
+  *margin-left: -7px; /* 3 */
+}
+
+/**
+* 1. Correct font size not being inherited in all browsers.
+* 2. Address margins set differently in IE 6/7, Firefox 3+, Safari 5,
+*    and Chrome.
+* 3. Improve appearance and consistency in all browsers.
+*/
+
+button,
+input,
+select,
+textarea {
+  font-size: 100%; /* 1 */
+  margin: 0; /* 2 */
+  vertical-align: baseline; /* 3 */
+  *vertical-align: middle; /* 3 */
+}
+
+/**
+* Address Firefox 3+ setting `line-height` on `input` using `!important` in
+* the UA stylesheet.
+*/
+
+button,
+input {
+  line-height: normal;
+}
+
+/**
+* Address inconsistent `text-transform` inheritance for `button` and `select`.
+* All other form control elements do not inherit `text-transform` values.
+* Correct `button` style inheritance in Chrome, Safari 5+, and IE 6+.
+* Correct `select` style inheritance in Firefox 4+ and Opera.
+*/
+
+button,
+select {
+  text-transform: none;
+}
+
+/**
+* 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
+*    and `video` controls.
+* 2. Correct inability to style clickable `input` types in iOS.
+* 3. Improve usability and consistency of cursor style between image-type
+*    `input` and others.
+* 4. Remove inner spacing in IE 7 without affecting normal text inputs.
+*    Known issue: inner spacing remains in IE 6.
+*/
+
+button,
+html input[type="button"], /* 1 */
+input[type="reset"],
+input[type="submit"] {
+  -webkit-appearance: button; /* 2 */
+  cursor: pointer; /* 3 */
+  *overflow: visible;  /* 4 */
+}
+
+/**
+* Re-set default cursor for disabled elements.
+*/
+
+button[disabled],
+html input[disabled] {
+  cursor: default;
+}
+
+/**
+* 1. Address box sizing set to content-box in IE 8/9.
+* 2. Remove excess padding in IE 8/9.
+* 3. Remove excess padding in IE 7.
+*    Known issue: excess padding remains in IE 6.
+*/
+
+input[type="checkbox"],
+input[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+  *height: 13px; /* 3 */
+  *width: 13px; /* 3 */
+}
+
+/**
+* 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
+* 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
+*    (include `-moz` to future-proof).
+*/
+
+input[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  -moz-box-sizing: content-box;
+  -webkit-box-sizing: content-box; /* 2 */
+  box-sizing: content-box;
+}
+
+/**
+* Remove inner padding and search cancel button in Safari 5 and Chrome
+* on OS X.
+*/
+
+input[type="search"]::-webkit-search-cancel-button,
+input[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+* Remove inner padding and border in Firefox 3+.
+*/
+
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  border: 0;
+  padding: 0;
+}
+
+/**
+* 1. Remove default vertical scrollbar in IE 6/7/8/9.
+* 2. Improve readability and alignment in all browsers.
+*/
+
+textarea {
+  overflow: auto; /* 1 */
+  vertical-align: top; /* 2 */
+}
+
+/**
+* Remove most spacing between table cells.
+*/
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+html,
+button,
+input,
+select,
+textarea {
+  color: #222;
+}
+
+/*
+::-moz-selection {
+  text-shadow: none;
+}
+
+::selection {
+  text-shadow: none;
+}
+*/
+
+img {
+  vertical-align: middle;
+}
+
+fieldset {
+  border: 0;
+  margin: 0;
+  padding: 0;
+}
+
+textarea {
+  resize: vertical;
+}
+
+.chromeframe {
+  margin: 0.2em 0;
+  background: #ccc;
+  color: #000;
+  padding: 0.2em 0;
+}

src/page/assets/styles/_variables.scss

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+$text-family: Whitney, Helvetica Neue, Helvetica, Arial, sans-serif;;
+$text-size:   14px;
+$text-normal: #dcddde;
+$text-muted: #72767d;
+$text-link: #00b0f4;
+
+$interactive-normal: #b9bbbe;
+$interactive-hover: #dcddde;
+$interactive-muted: #4f545c;
+
+$background-primary: #36393f;
+$background-secondary: #2f3136;
+$background-tertiary: #202225;
+$background-accent: #4f545c;
+$background-floating: #18191c;
+$background-modifier-hover: rgba(79, 84, 92, 0.16);
+$background-modifier-active: rgba(79, 84, 92, 0.24);
+$background-modifier-selected: rgba(79, 84, 92, 0.32);
+$background-modifier-accent: hsla(0, 0%, 100%, 0.06);
+
+$elevation-low: 0 1px 0 rgba(4, 4, 5, 0.2), 0 1.5px 0 rgba(6, 6, 7, 0.05), 0 2px 0 rgba(4, 4, 5, 0.05);
+$elevation-high: 0 8px 16px rgba(0, 0, 0, 0.24);
+
+$style-primary: #19bd9c;
+$style-error: #d32f2f;
+
+$menu-height: 40px;
+$controls-height: 125px;
+$side-width: 400px;

src/page/assets/styles/main.scss

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+@charset "utf-8";
+
+// Import variables
+@import "variables";
+
+// Reset CSS
+@import "reset";
+
+// Import Vendor
+@import "vendor/font-awesome";
+
+html, body {
+  -webkit-font-smoothing: subpixel-antialiased;
+  background-color: $background-tertiary;
+  font-family: $text-family;
+  font-size: $text-size;
+  color:  $text-normal;
+  overflow: hidden;
+  width: 100vw;
+  height: 100vh;
+  min-width: 320px;
+}

src/page/assets/styles/vendor/_font-awesome.scss

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+// Variables
+
+@use "sass:math";
+
+$fa-font-path:         "~@fortawesome/fontawesome-free/webfonts";
+$fa-font-size-base:    16px;
+$fa-font-display:      auto;
+$fa-css-prefix:        fa;
+$fa-border-color:      #eee;
+$fa-inverse:           #fff;
+$fa-li-width:          2em;
+$fa-fw-width:          math.div(20em, 16);
+$fa-primary-opacity:   1;
+$fa-secondary-opacity: .4;
+
+$fa-family-default:    'Font Awesome 6 Free';
+
+// Import FA source files
+@import "~@fortawesome/fontawesome-free/scss/brands";
+@import "~@fortawesome/fontawesome-free/scss/solid";
+@import "~@fortawesome/fontawesome-free/scss/regular";
+@import "~@fortawesome/fontawesome-free/scss/fontawesome";