footer {
    width: 100%;
    clear: both;
    position: absolute;
    position: absolute;
    /*←絶対位置*/
    bottom: 0;
    /*下に固定*/
    margin: 0;
    padding: 0;
    color: #FFF;
    font-size: 12px;
    line-height: 36px;
    text-align: center;
    background: #0571BA;
    margin-right: 1em;
    margin-top:30px;
}