.drawer {
		position: fixed;
		right: 4vw;
		top: 25vw;
		width: 14vw;
		z-index: 200;
		cursor: pointer;
}
.navbar_toggle_icon {
    position: relative;
    display: block;
    height: 2px;
    width: 45px;
    background: #333;
    transition: ease .5s;
}
.navbar_toggle_icon:nth-child(1) {
    top: 0;
}
.navbar_toggle_icon:nth-child(2) {
    margin: 8px 0;
}
.navbar_toggle_icon:nth-child(3) {
    top: 0;
}
.navbar_toggle.open .navbar_toggle_icon:nth-child(1) {
    top: 10px;
    transform: rotate(45deg);
}
.navbar_toggle.open .navbar_toggle_icon:nth-child(2) {
    opacity: 0;
}
.navbar_toggle.open .navbar_toggle_icon:nth-child(3) {
    top: -10px;
    transform: rotate(-45deg);
}
.menu {
    transition: ease .5s;
    z-index: 100;
    background: #fff;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0px;
    left: 0px;
    opacity: 0;
    visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-y: auto;
}
.menu.open {
    opacity: 1;
    visibility: visible;
}
.menu li {
		margin: 12vw 0;
		font-size: 5vw;
		line-height: 1.4;
		border-bottom: 1px solid #DCDCDC;
		width: 80vw;
}
.menu li a {
    color: #333;
    text-decoration: none;
    font-family: 'Noto Serif JP','游明朝',YuMincho,'ヒラギノ明朝 ProN W2';
}