*{margin:0;padding:0}body{width:100vw;height:100vh;display:flex;justify-content:center;align-items:center;background-color:#333}.quiz-app{width:600px;padding:20px;background-color:#fff;box-shadow:0 0 10px #0000001a;border-radius:8px}.question-section{text-align:center}.question-section h2{margin:10px 0;font-weight:800;color:teal}.question-section p{font-weight:600}.options{display:flex;justify-content:center;align-items:center;gap:15px;margin-top:20px}button{padding:10px;font-size:16px;border-radius:30px;border:none;background-color:teal;color:#fff;cursor:pointer;transition:background-color .3s}button:hover{filter:brightness(1.2)}.timer{margin-top:20px;font-size:18px;color:#555}.timer span{font-weight:bolder;color:#000}.score-section{font-weight:500;margin-bottom:10px;text-align:center}.score-section h2{margin:10px}.score-section button{background-color:tomato}