.menu-btn {
    position: relative;
    top: 20px;
    right:8px;
    display: flex;
    height: 20px;
    width: 30px;
    justify-content: center;
    align-items: center;
    z-index: 90;
}
.menu-btn span,
.menu-btn span:before,
.menu-btn span:after {
    content: '';
    display: block;
    height: 1.5px;
    width: 30px;
    border-radius: 3px;
    background-color:  #593913;
    position: absolute;
}
.menu-btn span:before {
    bottom: 7px;
}
.menu-btn span:after {
    top: 7px;
}

#menu-btn-check:checked ~ .menu-btn span {
    background-color: rgba(255, 255, 255, 0);/*メニューオープン時は真ん中の線を透明にする*/
}
#menu-btn-check:checked ~ .menu-btn span::before {
    bottom: 0;
    transform: rotate(45deg);
}
#menu-btn-check:checked ~ .menu-btn span::after {
    top: 0;
    transform: rotate(-45deg);
}

#menu-btn-check:checked ~ .menu-content {
    left: 0;/*メニューを画面内へ*/
}

#menu-btn-check {
    display: none;
}









/*メニュー用のcss*/
.menu-content {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 100%;/*leftの値を変更してメニューを画面外へ*/
    z-index: 80;
background-color:#8b7349;
text-align: center;
    transition: all 0.5s;/*アニメーション設定*/
}
.menu-content ul {
    padding: 70px 20px 0;
}
.menu-content ul li {
    border-bottom: solid 1.5px #593913;
    list-style: none;
}
.menu-content ul li a {
    display: block;
    width: 100%;
    font-size: 1.7em;
    box-sizing: border-box;
    text-decoration: none;
    padding: 15px 7px 15px 0;
    position: relative;
    color: #331201;
}