body {
    background-image: url(https://i.pinimg.com/originals/c0/65/c8/c065c84a8ebfe5e6c6678a8d1ee06ed0.gif);
    
}
#main {
    text-align-last: center;
    align-content: center;
}
#pics{
    margin-top: -1231px;
    text-align-last: center;
    width:450px
}
#art {
    margin-top:-2105px;
    margin-left: 1124px;
    text-align-last: center;
    width:300px
}