body {
    background: #121212;
    color: white;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
} 

.player {
    background: #1e1e1e;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    width: 300px;
} 

button {
    background: #1db954;
    border: none;
    padding: 10px 15px;
    margin: 10px;
    font-size: 18px;
    border-radius: 50%;
    cursor: pointer;
} 

input[types="range"] {
    width: 100%;
}