body {
    background-color: black;
}
.Spotify {
    width: 250px;
    border: 0;
    margin: 0;
    padding: 0;
    transform: 0;
    
    position: absolute; /* fixed */
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    transition: width 0.4s;
}
.Spotify:hover {
    width: 280px;
}
.Spotify:active {
    width: 280px;
}