#start-search-mask {
    width: 39px;
    height: 39px;
    position: absolute;
    top: 0px;
    right: 0px;
    border: 0px;
    cursor: pointer;
}

@media screen and (max-width: 767px) {
    #start-search-mask {
        right: 55px;
        top: 20px;
    }    
}