@media only screen and (max-width: 600px) {
    #head form {
        width: 100%;
        padding-top: 10px;
    }
}

#overlayer {
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 7100;
    background: #fff;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.loader {
    z-index: 7700;
    position: fixed;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}