refactor: make styles, js common for posts

scripts/index.js

@@ -19,31 +19,6 @@ const postMapping = new Map([
   ["Algorithms", [{ name: "two pointers" }, { name: "convex hull" }]],
 ]);
 
-const TERMINAL_PROMPT = "barrett@ruth:~$ ";
-let clearing = false;
-
-function clearPrompt(delay, callback) {
-  if (clearing) return;
-  clearing = true;
-
-  const terminalPrompt = document.querySelector(".terminal-prompt");
-  const topicLength = terminalPrompt.innerHTML.length - TERMINAL_PROMPT.length;
-  let i = 0;
-
-  function removeChar() {
-    if (i++ < topicLength) {
-      terminalPrompt.textContent = terminalPrompt.textContent.slice(0, -1);
-      setTimeout(removeChar, delay / topicLength);
-    } else {
-      i = 0;
-      clearing = false;
-      callback && callback();
-    }
-  }
-
-  removeChar();
-}
-
 function refresh(e) {
   e.preventDefault();