#g-nav{
    display: none;
}
@media(max-width:768px){
#g-nav {
    display: block;
}
.openbtn{
    display: block;
    position: absolute;
    z-index: 3;
    right: 15px;
    top: 27px;
    width: 42px;
    height: 42px;
    cursor: pointer;
    text-align: center;
    background-color: #0031C8;
    border-radius: 5px;
}
.openbtn span {
    display : block;
    position: absolute;
    width: 30px;
    height: 3px ;
    left: 6px;
    background: #fff;
    transition: 0.3s ease-in-out;
    border-radius: 2px;
    }
    .openbtn span:nth-of-type(1) {
    top: 10px;
    }
    .openbtn span:nth-of-type(2) {
    top: 20px;
    }
    .openbtn span:nth-of-type(3) {
    top: 30px;
    }
    .openbtn.active span:nth-child(1) {
    top: 20px;
    left: 7px;
    background :#fff;
    transform: rotate(-45deg);
    }
    .openbtn.active span:nth-child(2),
    .openbtn.active span:nth-child(3) {
    top: 20px;
    background :#fff;
    transform: rotate(45deg);
    }
    .openbtn.active{
        position: fixed;
    }
    #g-nav {
    position: absolute;
    z-index: -1;
    top: 0;
    left: 0;
    color: #fff;
    background-color: #313640;
    text-align: center;
    width: 100%;
    height: 100vh;
    opacity: 0;
    transition: opacity .6s ease, visibility .6s ease;
    display: flex;
    align-items: center;
    }
    #g-nav ul {
    margin: 0 auto;
    padding: 0;
    width: 100%;
    }
    #g-nav ul li {
    list-style-type: none;
    padding: 0;
    width: 100%;
    transition: .4s all;
    border-bottom: 1px solid #fff;
    }
    #g-nav ul li:first-child{
    border-bottom: none;
    }
    #g-nav ul li:last-of-type {
    padding-bottom: 0;
    }
    #g-nav ul li:hover{
    background :#ddd;
    }
    #g-nav ul li a {
    display: block;
    color: #fff;
    padding: 12px 0;
    text-decoration :none;
    line-height: 1.3rem;
    }
    #g-nav.active {
    opacity: 1;
    position: fixed;
    z-index: 2; 
    width: 100%;
    height: 100vh;/*髯ｦ�ｨ驕会ｽｺ邵ｺ蜷ｶ�矩ｬｮ蛟･��*/
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    }
#g-nav-list{
    width: 100%;
    position: relative;
    z-index: 5;
    padding: 0 55px;
    top: 12.5%;
    margin: 511px 0 254px 0;
}
#g-nav-list_en{
    width: 100%;
    position: relative;
    z-index: 5;
    padding: 0 55px;
    top: 8.5%;
    margin: 511px 0 200px 0;
}

.languege {
margin: 0 0 5px 0;
text-align: center;
}
.en,.ja{
    width: 200px!important;
    margin: 0 auto;
}
}