.menu-btn {
    position: fixed;
    top: 10px;
    right: 10px;
    display: flex;
    height: 60px;
    width: 60px;
    justify-content: center;
    align-items: center;
    z-index: 90;
    background-color: #3584bb;
}
.menu-btn span,
.menu-btn span:before,
.menu-btn span:after {
    content: '';
    display: block;
    height: 3px;
    width: 25px;
    border-radius: 3px;
    background-color: #ffffff;
    position: absolute;
}
.menu-btn span:before {
    bottom: 8px;
}
.menu-btn span:after {
    top: 8px;
}
#menu-btn-check:checked ~ .menu-btn span {
    background-color: rgba(255, 255, 255, 0);
}
#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 {
    display: none;
}
.menu-content {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 80;
    background-color: #3584bb;
}
.menu-content ul {
    padding: 70px 10px 0;
}
.menu-content ul li {
    border-bottom: solid 1px #ffffff;
    list-style: none;
}
.menu-content ul li a {
    display: block;
    width: 100%;
    font-size: 15px;
    box-sizing: border-box;
    color:#ffffff;
    text-decoration: none;
    padding: 9px 15px 10px 0;
    position: relative;
}
.menu-content ul li span {
    display: block;
    width: 100%;
    font-size: 15px;
    box-sizing: border-box;
    color:#ffff00;
    text-decoration: none;
    padding: 9px 15px 10px 0;
    position: relative;
}
.menu-content ul li a::before {
    content: "";
    width: 7px;
    height: 7px;
    border-top: solid 2px #ffffff;
    border-right: solid 2px #ffffff;
    transform: rotate(45deg);
    position: absolute;
    right: 11px;
    top: 16px;
}
.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: #3584bb;
    transition: all 0.5s;/*アニメーション設定*/
}
#menu-btn-check:checked ~ .menu-content {
    left: 0;/*メニューを画面内へ*/
}
h1 { font-size: 64px; text-align: center; margin-top: 64px }
table { margin-left: auto; margin-right: auto; border-spacing: 4px }
td { background-color: silver; padding: 4px }
.copy {  font-size: small; text-align: right }
.price { text-align: right }
.product-item { margin: 8px; display: inline-block }
.product-detail { vertical-align: top; display: inline-block; padding-left: 8px; width: 256px; height: 256px }

.product-cleansing { display: inline-block; background-image: url(./images/thumbnail-cleansing.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }
.product-pack { display: inline-block; background-image: url(./images/thumbnail-pack.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }
.product-lotion { display: inline-block; background-image: url(./images/thumbnail-lotion.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }
.product-latex { display: inline-block; background-image: url(./images/thumbnail-latex.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }
.product-gel { display: inline-block; background-image: url(./images/thumbnail-gel.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }
.product-oil { display: inline-block; background-image: url(./images/thumbnail-oil.jpg);  width: 256px; height: 256px; border-radius: 16px; text-align: center; color: white }