body {
      font-family: "Poppins", sans-serif;
      background-image:url(mat.jpg);
      text-align: center;
      margin: 0;
      padding: 0;
      height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      color: black;
    }

    h1 {
      font-size: 2em;
      color:white;
      margin-bottom: 20px;
    }

    .game-box {
        font: red;
      background: white;
      padding: 30px;
      border-radius: 20px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
      width: 300px;
    }


    #zadatak {
      font-size: 28px;
        color:black;
      margin-bottom: 20px;
    }

    input {
      font-size: 20px;
      padding: 8px;
      border: 2px solid #0984e3;
      border-radius: 10px;
      width: 120px;
      text-align: center;
      outline: none;
    }

    button {
      background-color: #0984e3;
      color: white;
      border: none;
      border-radius: 10px;
      padding: 10px 20px;
      font-size: 16px;
      margin-top: 15px;
      cursor: pointer;
      transition: 0.3s;
    }

    button:hover {
      background-image:url(background.jpg);
    }

    #rezultat {
      font-weight: bold;
      margin-top: 20px;
      font-size: 20px;
    }

    #score {
      margin-top: 20px;
      color: #2d3436;
    }
  </style>