It appears you have a well-structured Git repository with various files, including SVG icons and HTML documents. Here's a brief overview:

backend/node_modules/postcss-reduce-initial/src/data/fromInitial.json

@@ -0,0 +1,321 @@
+{
+  "accent-color": "auto",
+  "align-content": "normal",
+  "align-items": "normal",
+  "align-self": "auto",
+  "align-tracks": "normal",
+  "animation-delay": "0s",
+  "animation-direction": "normal",
+  "animation-duration": "0s",
+  "animation-fill-mode": "none",
+  "animation-iteration-count": "1",
+  "animation-name": "none",
+  "animation-range-end": "normal",
+  "animation-range-start": "normal",
+  "animation-timing-function": "ease",
+  "animation-timeline": "auto",
+  "appearance": "none",
+  "aspect-ratio": "auto",
+  "azimuth": "center",
+  "backdrop-filter": "none",
+  "background-attachment": "scroll",
+  "background-blend-mode": "normal",
+  "background-image": "none",
+  "background-position": "0% 0%",
+  "background-position-x": "0%",
+  "background-position-y": "0%",
+  "background-repeat": "repeat",
+  "block-size": "auto",
+  "border-block-style": "none",
+  "border-block-width": "medium",
+  "border-block-end-style": "none",
+  "border-block-end-width": "medium",
+  "border-block-start-style": "none",
+  "border-block-start-width": "medium",
+  "border-bottom-left-radius": "0",
+  "border-bottom-right-radius": "0",
+  "border-bottom-style": "none",
+  "border-bottom-width": "medium",
+  "border-end-end-radius": "0",
+  "border-end-start-radius": "0",
+  "border-image-outset": "0",
+  "border-image-slice": "100%",
+  "border-image-source": "none",
+  "border-image-width": "1",
+  "border-inline-style": "none",
+  "border-inline-width": "medium",
+  "border-inline-end-style": "none",
+  "border-inline-end-width": "medium",
+  "border-inline-start-style": "none",
+  "border-inline-start-width": "medium",
+  "border-left-style": "none",
+  "border-left-width": "medium",
+  "border-right-style": "none",
+  "border-right-width": "medium",
+  "border-spacing": "0",
+  "border-start-end-radius": "0",
+  "border-start-start-radius": "0",
+  "border-top-left-radius": "0",
+  "border-top-right-radius": "0",
+  "border-top-style": "none",
+  "border-top-width": "medium",
+  "bottom": "auto",
+  "box-decoration-break": "slice",
+  "box-shadow": "none",
+  "break-after": "auto",
+  "break-before": "auto",
+  "break-inside": "auto",
+  "caption-side": "top",
+  "caret-color": "auto",
+  "caret-shape": "auto",
+  "clear": "none",
+  "clip": "auto",
+  "clip-path": "none",
+  "color-scheme": "normal",
+  "column-count": "auto",
+  "column-gap": "normal",
+  "column-rule-style": "none",
+  "column-rule-width": "medium",
+  "column-span": "none",
+  "column-width": "auto",
+  "contain": "none",
+  "contain-intrinsic-block-size": "none",
+  "contain-intrinsic-height": "none",
+  "contain-intrinsic-inline-size": "none",
+  "contain-intrinsic-width": "none",
+  "container-name": "none",
+  "container-type": "normal",
+  "content": "normal",
+  "counter-increment": "none",
+  "counter-reset": "none",
+  "counter-set": "none",
+  "cursor": "auto",
+  "direction": "ltr",
+  "empty-cells": "show",
+  "filter": "none",
+  "flex-basis": "auto",
+  "flex-direction": "row",
+  "flex-grow": "0",
+  "flex-shrink": "1",
+  "flex-wrap": "nowrap",
+  "float": "none",
+  "font-feature-settings": "normal",
+  "font-kerning": "auto",
+  "font-language-override": "normal",
+  "font-optical-sizing": "auto",
+  "font-palette": "normal",
+  "font-variation-settings": "normal",
+  "font-size": "medium",
+  "font-size-adjust": "none",
+  "font-stretch": "normal",
+  "font-style": "normal",
+  "font-synthesis-position": "none",
+  "font-synthesis-small-caps": "auto",
+  "font-synthesis-style": "auto",
+  "font-synthesis-weight": "auto",
+  "font-variant": "normal",
+  "font-variant-alternates": "normal",
+  "font-variant-caps": "normal",
+  "font-variant-east-asian": "normal",
+  "font-variant-emoji": "normal",
+  "font-variant-ligatures": "normal",
+  "font-variant-numeric": "normal",
+  "font-variant-position": "normal",
+  "font-weight": "normal",
+  "forced-color-adjust": "auto",
+  "grid-auto-columns": "auto",
+  "grid-auto-flow": "row",
+  "grid-auto-rows": "auto",
+  "grid-column-end": "auto",
+  "grid-column-gap": "0",
+  "grid-column-start": "auto",
+  "grid-row-end": "auto",
+  "grid-row-gap": "0",
+  "grid-row-start": "auto",
+  "grid-template-areas": "none",
+  "grid-template-columns": "none",
+  "grid-template-rows": "none",
+  "hanging-punctuation": "none",
+  "height": "auto",
+  "hyphenate-character": "auto",
+  "hyphenate-limit-chars": "auto",
+  "hyphens": "manual",
+  "image-rendering": "auto",
+  "image-resolution": "1dppx",
+  "ime-mode": "auto",
+  "initial-letter": "normal",
+  "initial-letter-align": "auto",
+  "inline-size": "auto",
+  "input-security": "auto",
+  "inset-block-end": "auto",
+  "inset-block-start": "auto",
+  "inset-inline-end": "auto",
+  "inset-inline-start": "auto",
+  "isolation": "auto",
+  "justify-content": "normal",
+  "justify-items": "legacy",
+  "justify-self": "auto",
+  "justify-tracks": "normal",
+  "left": "auto",
+  "letter-spacing": "normal",
+  "line-break": "auto",
+  "line-clamp": "none",
+  "line-height": "normal",
+  "line-height-step": "0",
+  "list-style-image": "none",
+  "list-style-type": "disc",
+  "margin-block-end": "0",
+  "margin-block-start": "0",
+  "margin-bottom": "0",
+  "margin-inline-end": "0",
+  "margin-inline-start": "0",
+  "margin-left": "0",
+  "margin-right": "0",
+  "margin-top": "0",
+  "margin-trim": "none",
+  "mask-border-mode": "alpha",
+  "mask-border-outset": "0",
+  "mask-border-slice": "0",
+  "mask-border-source": "none",
+  "mask-border-width": "auto",
+  "mask-composite": "add",
+  "mask-image": "none",
+  "mask-position": "0% 0%",
+  "mask-repeat": "repeat",
+  "mask-size": "auto",
+  "masonry-auto-flow": "pack",
+  "math-depth": "0",
+  "math-shift": "normal",
+  "math-style": "normal",
+  "max-block-size": "none",
+  "max-height": "none",
+  "max-inline-size": "none",
+  "max-lines": "none",
+  "max-width": "none",
+  "min-block-size": "0",
+  "min-height": "auto",
+  "min-inline-size": "0",
+  "min-width": "auto",
+  "mix-blend-mode": "normal",
+  "object-fit": "fill",
+  "offset-anchor": "auto",
+  "offset-distance": "0",
+  "offset-path": "none",
+  "offset-position": "normal",
+  "offset-rotate": "auto",
+  "opacity": "1",
+  "order": "0",
+  "orphans": "2",
+  "outline-offset": "0",
+  "outline-style": "none",
+  "outline-width": "medium",
+  "overflow-anchor": "auto",
+  "overflow-block": "auto",
+  "overflow-clip-margin": "0px",
+  "overflow-inline": "auto",
+  "overflow-wrap": "normal",
+  "overlay": "none",
+  "overscroll-behavior": "auto",
+  "overscroll-behavior-block": "auto",
+  "overscroll-behavior-inline": "auto",
+  "overscroll-behavior-x": "auto",
+  "overscroll-behavior-y": "auto",
+  "padding-block-end": "0",
+  "padding-block-start": "0",
+  "padding-bottom": "0",
+  "padding-inline-end": "0",
+  "padding-inline-start": "0",
+  "padding-left": "0",
+  "padding-right": "0",
+  "padding-top": "0",
+  "page": "auto",
+  "page-break-after": "auto",
+  "page-break-before": "auto",
+  "page-break-inside": "auto",
+  "paint-order": "normal",
+  "perspective": "none",
+  "pointer-events": "auto",
+  "position": "static",
+  "resize": "none",
+  "right": "auto",
+  "rotate": "none",
+  "row-gap": "normal",
+  "scale": "none",
+  "scrollbar-color": "auto",
+  "scrollbar-gutter": "auto",
+  "scrollbar-width": "auto",
+  "scroll-behavior": "auto",
+  "scroll-margin-block-start": "0",
+  "scroll-margin-block-end": "0",
+  "scroll-margin-bottom": "0",
+  "scroll-margin-inline-start": "0",
+  "scroll-margin-inline-end": "0",
+  "scroll-margin-left": "0",
+  "scroll-margin-right": "0",
+  "scroll-margin-top": "0",
+  "scroll-padding-block-start": "auto",
+  "scroll-padding-block-end": "auto",
+  "scroll-padding-bottom": "auto",
+  "scroll-padding-inline-start": "auto",
+  "scroll-padding-inline-end": "auto",
+  "scroll-padding-left": "auto",
+  "scroll-padding-right": "auto",
+  "scroll-padding-top": "auto",
+  "scroll-snap-align": "none",
+  "scroll-snap-coordinate": "none",
+  "scroll-snap-points-x": "none",
+  "scroll-snap-points-y": "none",
+  "scroll-snap-stop": "normal",
+  "scroll-snap-type": "none",
+  "scroll-snap-type-x": "none",
+  "scroll-snap-type-y": "none",
+  "scroll-timeline-axis": "block",
+  "scroll-timeline-name": "none",
+  "shape-image-threshold": "0.0",
+  "shape-margin": "0",
+  "shape-outside": "none",
+  "tab-size": "8",
+  "table-layout": "auto",
+  "text-align-last": "auto",
+  "text-combine-upright": "none",
+  "text-decoration-line": "none",
+  "text-decoration-skip-ink": "auto",
+  "text-decoration-style": "solid",
+  "text-decoration-thickness": "auto",
+  "text-emphasis-style": "none",
+  "text-indent": "0",
+  "text-justify": "auto",
+  "text-orientation": "mixed",
+  "text-overflow": "clip",
+  "text-rendering": "auto",
+  "text-shadow": "none",
+  "text-transform": "none",
+  "text-underline-offset": "auto",
+  "text-underline-position": "auto",
+  "text-wrap": "wrap",
+  "timeline-scope": "none",
+  "top": "auto",
+  "touch-action": "auto",
+  "transform": "none",
+  "transform-style": "flat",
+  "transition-behavior": "normal",
+  "transition-delay": "0s",
+  "transition-duration": "0s",
+  "transition-property": "all",
+  "transition-timing-function": "ease",
+  "translate": "none",
+  "unicode-bidi": "normal",
+  "user-select": "auto",
+  "view-timeline-axis": "block",
+  "view-timeline-inset": "auto",
+  "view-timeline-name": "none",
+  "view-transition-name": "none",
+  "white-space": "normal",
+  "widows": "2",
+  "width": "auto",
+  "will-change": "auto",
+  "word-break": "normal",
+  "word-spacing": "normal",
+  "word-wrap": "normal",
+  "z-index": "auto"
+}

backend/node_modules/postcss-reduce-initial/src/data/toInitial.json

@@ -0,0 +1,37 @@
+{
+  "background-clip": "border-box",
+  "background-color": "transparent",
+  "background-origin": "padding-box",
+  "background-size": "auto auto",
+  "border-block-color": "currentcolor",
+  "border-block-end-color": "currentcolor",
+  "border-block-start-color": "currentcolor",
+  "border-bottom-color": "currentcolor",
+  "border-collapse": "separate",
+  "border-inline-color": "currentcolor",
+  "border-inline-end-color": "currentcolor",
+  "border-inline-start-color": "currentcolor",
+  "border-left-color": "currentcolor",
+  "border-right-color": "currentcolor",
+  "border-top-color": "currentcolor",
+  "box-sizing": "content-box",
+  "color": "canvastext",
+  "column-rule-color": "currentcolor",
+  "font-synthesis": "weight style small-caps position",
+  "image-orientation": "from-image",
+  "mask-clip": "border-box",
+  "mask-mode": "match-source",
+  "mask-origin": "border-box",
+  "mask-type": "luminance",
+  "ruby-align": "space-around",
+  "ruby-merge": "separate",
+  "ruby-position": "alternate",
+  "text-decoration-color": "currentcolor",
+  "text-emphasis-color": "currentcolor",
+  "text-emphasis-position": "over right",
+  "transform-box": "view-box",
+  "transform-origin": "50% 50% 0",
+  "vertical-align": "baseline",
+  "white-space-collapse": "collapse",
+  "writing-mode": "horizontal-tb"
+}

backend/node_modules/postcss-reduce-initial/src/index.js

@@ -0,0 +1,80 @@
+'use strict';
+const { dirname } = require('path');
+const browserslist = require('browserslist');
+const { isSupported } = require('caniuse-api');
+const fromInitial = require('./data/fromInitial.json');
+const toInitial = require('./data/toInitial.json');
+const ignoreProps = require('./lib/ignoreProps.js');
+
+const initial = 'initial';
+
+// In most of the browser including chrome the initial for `writing-mode` is not `horizontal-tb`. Ref https://github.com/cssnano/cssnano/pull/905
+const defaultIgnoreProps = ignoreProps;
+
+/**
+ * @typedef {{ overrideBrowserslist?: string | string[] }} AutoprefixerOptions
+ * @typedef {Pick<browserslist.Options, 'stats' | 'path' | 'env'>} BrowserslistOptions
+ * @typedef {{ignore?: string[]} & AutoprefixerOptions & BrowserslistOptions} Options
+ */
+
+/**
+ * @type {import('postcss').PluginCreator<Options>}
+ * @param {Options} options
+ * @return {import('postcss').Plugin}
+ */
+function pluginCreator(options = {}) {
+  return {
+    postcssPlugin: 'postcss-reduce-initial',
+
+    /**
+     * @param {import('postcss').Result & {opts: BrowserslistOptions & {file?: string}}} result
+     */
+    prepare(result) {
+      const { stats, env, from, file } = result.opts || {};
+      const browsers = browserslist(options.overrideBrowserslist, {
+        stats: options.stats || stats,
+        path: options.path || dirname(from || file || __filename),
+        env: options.env || env,
+      });
+
+      const initialSupport = isSupported('css-initial-value', browsers);
+      return {
+        OnceExit(css) {
+          css.walkDecls((decl) => {
+            const lowerCasedProp = decl.prop.toLowerCase();
+            const ignoreProp = new Set(
+              defaultIgnoreProps.concat(options.ignore || [])
+            );
+
+            if (ignoreProp.has(lowerCasedProp)) {
+              return;
+            }
+
+            if (
+              initialSupport &&
+              Object.prototype.hasOwnProperty.call(toInitial, lowerCasedProp) &&
+              decl.value.toLowerCase() ===
+                toInitial[/** @type {keyof toInitial} */ (lowerCasedProp)]
+            ) {
+              decl.value = initial;
+              return;
+            }
+
+            if (
+              decl.value.toLowerCase() !== initial ||
+              !fromInitial[/** @type {keyof fromInitial} */ (lowerCasedProp)]
+            ) {
+              return;
+            }
+
+            decl.value =
+              fromInitial[/** @type {keyof fromInitial} */ (lowerCasedProp)];
+          });
+        },
+      };
+    },
+  };
+}
+
+pluginCreator.postcss = true;
+module.exports = pluginCreator;

backend/node_modules/postcss-reduce-initial/src/lib/ignoreProps.js

@@ -0,0 +1,2 @@
+'use strict';
+module.exports = ['writing-mode', 'transform-box'];