body {

    margin:0;

    padding:0;

    background:#111;

    color:white;

    font-family:Arial, sans-serif;

}



.container {

    width:600px;

    margin:auto;

    padding:30px;

}



h1 {

    text-align:center;

}



.panel {

    background:#222;

    padding:20px;

    margin:20px 0;

    border-radius:12px;

}



input {

    width:90%;

    padding:12px;

    margin:8px 0;

    background:#333;

    border:none;

    border-radius:8px;

    color:white;

    font-size:16px;

}



input[type="color"] {

    height:45px;

}



button {

    padding:12px 20px;

    margin:5px;

    border:none;

    border-radius:8px;

    background:#444;

    color:white;

    cursor:pointer;

    font-size:16px;

}


button:hover {

    background:#666;

}



label {

    display:block;

    margin-top:10px;

}