html {
    width: 100vw;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-y: scroll;
    overflow-x: auto;
    position: fixed;
    overscroll-behavior: none;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

/* ハンバーガー */
.hamburger {
    position: fixed;
    right: 8%;
    top: 50px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 1000;
}

.hamburger__line {
    position: absolute;
    width: 40px;
    height: 3px;
    right: 0;
    background-color: #333333;
    transition: all 0.5s;
}

.hamburger__line--1 {
    top: 1px;
}

.hamburger__line--2 {
    top: 18px;
}

.hamburger__line--3 {
    top: 36px;
}

.open .hamburger__line--1 {
    transform: rotate(-45deg);
    top: 11px;
}

.open .hamburger__line--2 {
    opacity: 0;
}

.open .hamburger__line--3 {
    transform: rotate(45deg);
    top: 11px;
}

.sp-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: #F2F2F2;
    transition: all 0.5s;
    overflow-y: auto;
    z-index: 900;
    overscroll-behavior: none;
}

.sp-nav-block {
    height: 100vh;
    width: 100vw;
}

.open .sp-nav {
    right: 0;
}


.black-bg {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    background-color: #000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s;
    z-index: 500;
    cursor: pointer;
}

.open .black-bg {
    opacity: 0.3;
    visibility: visible;
}

.triploglist_hamburger {
    width: 60%;
}


.select_menu {
    font-size: clamp(10px, 3.5vw, 20px);
    width: 100%;
    position: absolute;
    top: 2%;
    left: 0;
}

.select_menu ul {
    border: none;
    border-radius: 10px;
    width: fit-content;
    margin: 20px;
    padding: 5px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.select_menu ul li {
    list-style-type: none;
    margin: 5px;
}

/* ハンバーガー */
.left_menu_block {
    height: 90%;
    width: 100%;
}

.left_menu_block ul {
    margin: 0;
}

.left_menu_block img {
    display: none;
}

.nav-block {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.books-hyousi-left {
    display: none;
}

.sp-nav {
    position: fixed;
    z-index: 900;
}

.left-contents {
    position: relative;
    z-index: 1000;
    width: 0;
}

.right-contents {
    width: 100%;
    height: 100vh;
}

.books-hyousi-right {
    width: 95%;
    right: 0;
    left: auto;
}

.books-right {
    width: 90%;
    right: 0;
    left: auto;
}

.main-box {
    width: 80%;
}

.hamburger {
    z-index: 1100;
    /* 一番手前 */
}

footer {
    display: block;
    background-color: #17184B;
    color: #f2f2f2;
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    padding: 5px 0;
    z-index: 1;
}

footer img {
    width: 2em;
    filter: brightness(0) saturate(100%) invert(98%) sepia(10%) saturate(18%) hue-rotate(253deg) brightness(114%) contrast(90%);
}

footer p {
    font-size: 1em;
    text-align: left;
    margin-left: 0 auto;
    display: inline-block;
}

footer .footer-big {
    font-size: 1.5em;
}

footer nav ul {
    padding-left: 0;
}

.footer_p_box {
    text-align: center;
}

.footer_p_box a {
    color: #F2F2F2;
}

.main-block-3 {
    margin-bottom: 210px;
}