.loader {
    position: relative;
    text-align: center;
    margin: 15px auto 35px auto;
    z-index: 9999;
    display: block;
    width: 80px;
    height: 80px;
    border: 10px solid rgba(0, 0, 0, .3);
    border-radius: 50%;
    animation: spin 1s ease-in-out infinite;
    -webkit-animation: spin 1s ease-in-out infinite;
    bottom: 30px;
}