Footer Code

html {
    height: 100%;
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    position: relative;
    margin: 0;
    min-height: 100%;
}

#footer {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    padding: .5rem;
    background-color: #efefef;
    text-align: center
}