/*
ヘッダーメニューのボタン
基本触るな
*/
a.Btn-header{
    position: relative;
    display: block;
    font-weight: bold;
    overflow: hidden;
    padding: 1.5rem 6rem;
    color: #fff;
    border-radius: 0;
    background: #000;
    text-decoration: none;
    white-space: nowrap;
    line-height: 5em;
    margin: 20px 0;
}

a.Btn-header span{
    position: relative;
}

a.Btn-header:before{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    content: '';
    -webkit-transition: all .5s ease-in-out;
    transition: all .5s ease-in-out;
    -webkit-transform: translateX(-96%);
    transform: translateX(-96%);
    background: #32e7ff;
}

a.Btn-header:hover:before{
    -webkit-transform: translateX(0%);
    transform: translateX(0%);
}

/*
    ハンバーガーメニューの調整
    この下触るな
*/
.header{
    position: relative;
    padding: 20px;
}

.hamburger{
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    width: 48px;
    height: 48px;
    border: none;
    background: transparent;
    cursor: pointer;
}

.hamburger_line{
    position: absolute;
    left: 11px;
    width: 26px;
    height: 2px;
    background-color: #333;
    transition: all .4s;
}

.hamburger_line:nth-of-type(1){
    top: 14px;
}
.hamburger_line:nth-of-type(2){
    top: 23px;
}
.hamburger_line:nth-of-type(3){
    top: 32px;
}

/*メニューオープン時*/
.hamburger.active .hamburger_line:nth-of-type(1){
    transform: translateY(9px) rotate(-45deg);
}
.hamburger.active .hamburger_line:nth-of-type(2){
    opacity: 0;
}
.hamburger.active .hamburger_line:nth-of-type(3){
    transform: translateY(-9px) rotate(45deg);
}

.nav{
    position: fixed;
    top: 0;
    left: 0;
    width: 300px;
    height: 100vh;
    background-color: #fff;
    box-shadow: 2px 0 4px rgba(0,0,0,1);
    transform: translateX(-100%);
    transition: transform .4s;
    z-index: 90;
}

.nav.active{
    transform: translateX(0)
}

.nav_list{
    margin: 0;
    padding: 100px 0 0;
    list-style: none;
}

.nav_item{
    padding: 0 20px;
}

.nav_link{
    display: block;
    padding: 0 20px;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #eee;
}