/*ヘッダ*/
#head {
    width: 100%;
    height: 100px;
    position: fixed;
    top: 0;
    z-index: 9999;
}

@media screen and (max-width: 1280px) {
    #head_sp {
        background: #ffffff;
        width: 100%;
        height: 55px;
        position: fixed;
        z-index: 10000;
    }  
}