html,
body {
    overscroll-behavior: none;
    -webkit-overflow-scrolling: auto;
}
.device {
    display: flex;
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    flex-direction: column;
    background-size: 100% auto;
}
.device--with-status-bar {
    background-image: none;
}
.device--with-status-bar::before {
    content: "";
    display: block;
    width: 100%;
    height: 42px;
}
.device--with-status-bar::after {
    content: "";
    display: block;
    width: 100%;
    height: 0px;
}
.device .app {
    flex: 1;
}

.demonstrate {
    display: flex;
    width: 100%;
}
.device-viewer {
    flex: 1;
}
.check-pages {
    display: flex;
    box-sizing: border-box;
    padding: 2rem 1rem;
}
.pages-nav {
    flex-basis: 300px;
    height: 100%;
    border-right: 2px solid #ddd;
}
.section-list {
}
.section-item {
    margin: 1.5rem 0 0;
}
.section-item:first-child {
    margin-top: 0;
}
.device-list {
    display: flex;
    margin: -4rem 0 0;
    padding: 0;
    flex: 1;
    flex-basis: auto;
    flex-wrap: wrap;
    list-style-type: none;
}
.device-item {
    box-sizing: border-box;
    margin: 4rem 0 0 2rem;
}
.device-item__device {
    position: relative;
    box-sizing: border-box;
    border: 1px solid #000;
}
.device-item__device--ios {
    background-image: url('/assets/status-bar--ios.png');
    background-position: center top;
    background-size: 100%;
    background-repeat: no-repeat;
}
.device-item__device--ios:after {
    position: absolute;
    z-index: -1;
    bottom: 10px;
    left: calc(50% - 60px);
    content: "";
    display: block;
    width: 120px;
    height: 0;
    border-top: 6px solid #ddd;
    border-radius: 10px;
}
.device-item__device--android {
    background-image: url('/assets/status-bar--android.png'), url('/assets/navigation-bar--android.png');
    background-position: center top, center bottom;
    background-size: 100%, 100%;
    background-repeat: no-repeat, no-repeat;
}
.device-item__name {
    margin: 0 0 0.5rem;
    text-align: center;
    font-family: 'Noto Sans KR', sans-serif;
    font-weight: 700;
}
.device-item__spec {
    margin: 0 0 0.5rem;
    text-align: center;
    font-family: 'Noto Sans KR', sans-serif;
}
.device-item__frame {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border: none;
    background-color: #fff;
}
.page-nav-button,
.page-nav-button:visited {
    position: absolute;
    bottom: 10px;
    z-index: 100;
    display: flex;
    width: 50px;
    height: 50px;
    justify-content: center;
    align-items: center;
    line-height: 1;
    text-decoration: none;
    color: #000;
    font-size: 2rem;
    font-weight: 700;
    background-color: #fff;
    border-radius: 100%;
    box-shadow: 0px 0px 4px 4px rgba(0, 0, 0, 0.2);
}
.page-nav-button--prev-page {
    left: 10px;
}
.page-nav-button--next-page {
    right: 10px;
}