Fix UI issues, timer logic, theme switcher, view solutions, and markdown rendering

parse2.js

@@ -0,0 +1,18 @@
+
+import { unified } from "unified";
+import remarkParse from "remark-parse";
+import remarkMath from "remark-math";
+import rehypeKatex from "rehype-katex";
+import remarkRehype from "remark-rehype";
+import rehypeStringify from "rehype-stringify";
+
+const text = "The velocity of a particle moving along the x-axis is given by $v(t) = \\int_{0}^{t} (3\\tau^2 - 2\\tau) d\\tau$. What is the displacement of the particle at $t = 2$ seconds if it starts from the origin?";
+const tree = unified()
+  .use(remarkParse)
+  .use(remarkMath)
+  .use(remarkRehype)
+  .use(rehypeKatex, { strict: "warn", throwOnError: false })
+  .use(rehypeStringify)
+  .processSync(text);
+console.log(tree.toString());
+