body {
    font-family: Arial;
    text-align: center;
    margin-top: 40px;
    background: url('skoreipul.jpg') no-repeat center center fixed;
    background-size: cover;
    color: #fff;
  }
  
  input {
    width: 80px;
    padding: 5px;
    margin: 5px;
    border-radius: 5px;
    border: none;
  }
  
  button {
    padding: 8px 15px;
    margin: 5px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background: rgb(241, 7, 7);           /* Tombol jadi hitam */
    color: rgb(15, 9, 9);                /* Teks putih */
    font-weight: bold;
    transition: 0.3s;
  }
  
  #hasil {
    font-weight: bold;
    margin-top: 15px;
    background: rgba(0, 0, 0, 0.4);
    display: inline-block;
    padding: 8px 12px;
    border-radius: 8px;
  }