footer{
    position: relative;
    padding: 1vmin;
    padding-bottom: 2vmin;
    font-size: 2vmin;
}

footer::before{
    content:"";
    background-color:rgb(250, 252, 175);
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    opacity: 0.3;
    z-index: -1;
}