html, body {
    margin: 0;
    font-size: 16px;
    font-family: medium-content-sans-serif-font, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    color: #333;
    scroll-behavior: smooth;
}

* {
    box-sizing: border-box;
}

p {
    margin: 8px 0;
}

.main {
    max-width: 740px;
    margin: 0 auto 128vh auto;
    padding: 2vw 3vw;
}
.header1{
    font-size: 32px;
}
.header2{
    font-size: 24px;
}
.header1, .header2 {
    font-weight: 300;
}
.nav-1col{
    display: block;
}
.nav-2col{
    display: flex;
}
.ot, .vt{
    flex-grow: 1;
}
ul li::marker {
    transition: color 0.2s;
    color: #c9c9c9;
}
ul li:hover::marker {
    color: #878787;
}
ul li a{
    /*display: inline-flex;*/
    /*align-items: center;*/
    padding: 5px 0 2px 0;
    line-height: 1.6;
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}
ul li a:hover{
    color: #666;
}
.main {
    margin: 0 auto 128px auto;
}
.p18{
    position: relative;
}
.p18::after{
    content: '18+';
    padding: 0px 4px;
    margin: 0 7px;
    font-size: 13px;
    line-height: 1.4;
    border-radius: 4px;
    color: #eee;
    background: #555;
}
@media screen and (max-width: 740px) {
    .header1{
        font-size: 24px;
    }
    .header2{
        font-size: 20px;
    }
    .header1, .header2 {
        font-weight: 500;
    }
    .nav-2col{
        display: block;
    }
    .books li a{
        padding: 8px 0 2px 0;
    }
}