@media (max-width:992px){
    .hamburger {
        display: block;
        position: fixed;
        z-index : 1032;
        width : 42px;
        height: 42px;
        cursor: pointer;
        text-align: center;
        right: 10px;
    }
    .hamburger span {
        display : block;
        position: absolute;
        width   : 30px;
        height  : 2px ;
        left    : 6px;
        background : #555;
        -webkit-transition: 0.3s ease-in-out;
        -moz-transition   : 0.3s ease-in-out;
        transition        : 0.3s ease-in-out;
    }
    .hamburger span:nth-child(1) {
        top: 10px;
    }
    .hamburger span:nth-child(2) {
        top: 20px;
    }
    .hamburger span:nth-child(3) {
        top: 30px;
    }

    /* ナビ開いてる時のボタン */
    .hamburger.active span:nth-child(1) {
        top : 16px;
        left: 6px;
        background :#fff;
        -webkit-transform: rotate(-45deg);
        -moz-transform   : rotate(-45deg);
        transform        : rotate(-45deg);
    }

    .hamburger.active span:nth-child(2),
    .hamburger.active span:nth-child(3) {
        top: 16px;
        background :#fff;
        -webkit-transform: rotate(45deg);
        -moz-transform   : rotate(45deg);
        transform        : rotate(45deg);
    }
}