JSFiddle - React, Tailwind, and code Playground

by dledle2

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Tic Tac Toe Trainer v01 working</title>
  <style>
    body { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; margin: 0; font-family: Arial, sans-serif; background: #f0f0f0; }
    #gameContainer { position: relative; width: 90vmin; height: 90vmin; max-width: 400px; max-height: 400px; margin-bottom: 20px; }
    #board { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; width: 100%; height: 100%; }
    .cell { background: #fff; border: 2px solid #333; font-size: calc(10vmin); display: flex; align-items: center; justify-content: center; cursor: pointer; user-select: none; }
    .cell.hint { background: #ffeb3b88; }
    .cell.user { color: lightblue; }
    .cell.comp { color: rgba(165, 42, 42, 0.3); }
    #symbolSelect { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; flex-direction: column; align-items: center; justify-content: center; z-index: 10; }
    .symbol-btn { font-size: 20vmin; color: #fff; background: none; border: none; margin: 20px; cursor: pointer; user-select: none; }
    .symbol-btn:active { transform: scale(0.95); }
    #controls { display: flex; gap: 10px; }
    .control-btn { padding: 10px 20px; font-size: 1rem; cursor: pointer; border: none; background: #333; color: #fff; border-radius: 4px; }
    .control-btn:active { transform: scale(0.98); }
    #hintText, #globalHints { margin-top: 15px; font-size: 1rem; max-width: 90vmin; white-space: pre-wrap; text-align: center; }
    #globalHints { margin-top: 25px; padding: 15px; background: #fff6db; border: 1px solid #ccc; border-radius: 5px; }
    @media (max-width:600px) { #gameContainer { width:90vw; height:90vw; } .cell { font-size: calc(20vw/3); } }
  </style>
</head>
<body>
  <div id="gameContainer">
    <div...