Fix(Structure): Split styles.css into separate files for different components and sections.

styles/github-contributions-calendar.css

@@ -0,0 +1,24 @@
+/* GitHub Contributions Calendar */
+.github-calendar {
+    width: fit-content;
+    margin-left: auto;
+    margin-right: auto;
+}
+/* Hide broken statistics */
+.github-calendar > :not(:first-child) {
+    display: none;
+}
+/* Hide the "How we calculate contributions" text */
+.github-calendar .js-calendar-graph .width-full .float-left {
+    display: none;
+}
+/* Change title text */
+.github-calendar table.js-calendar-graph-table > caption:first-child {
+    color: transparent;
+    font-size: 0;
+}
+.github-calendar table.js-calendar-graph-table > caption:first-child::before {
+    content: "GitHub Contributions Calendar";
+    color: var(--text-colour);
+    font-size: 1rem;
+}