body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    color: #222;
    margin: 0;
    padding: 0;
  }
  header {
    background: #2b5ce0;
    color: white;
    padding: 15px;
    text-align: center;
  }
  section {
    background: white;
    margin: 20px auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 700px;
  }
  h2 {
    color: #2b5ce0;
    border-bottom: 2px solid #2b5ce0;
    padding-bottom: 5px;
  }
  input, button, select {
    padding: 8px;
    margin: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  button {
    cursor: pointer;
    background-color: #2b5ce0;
    color: white;
  }
  button:hover {
    background-color: #1c44a3;
  }
  ul {
    list-style-type: none;
    padding: 0;
  }
  ul li {
    padding: 6px;
    background: #f1f1f1;
    margin: 5px 0;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .hapus-btn {
    background: red;
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
  }
  .hapus-btn:hover {
    background: darkred;
  }
  .clock {
    font-size: 2em;
    font-weight: bold;
  }
  .date {
    margin-top: 10px;
    font-size: 1.2em;
  }
  .quiz-option {
    display: block;
    width: 100%;
    text-align: left;
    margin: 8px 0;
  }