body {
    border: 0;
    padding: 0;
    margin: 0;
    font-family: Candara, Helvetica, sans-serif;
    font-size: 18px;
    line-height: 1.4em;
    color: #000000;
    background-color: #ffffff;
}

a:link,
a:visited,
a:active
{
    color: #000000;
    background-color: transparent;
}

h1, h2 {
    line-height: 1.1em;
}

ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
}

li {
    padding-bottom: 20px;
}

.header a {
    font-size: 16px;
}

div.mod {
    box-sizing: border-box;
    padding: 20px;
    margin: 0 10px 10px;
}

img.book {
    max-width: 300px;
    display: block;
    width: 100%;
}

@media (min-width: 600px) {
    .header {
        display: flex;
        justify-content: space-between;
        font-size: 18px;
    }

    div.mod {
        padding: 60px;
        margin: 0 30px 30px;
    }
}

nav {
    text-align: right;
    padding: 20px 30px;
    box-sizing: border-box;
}

nav ul {
    margin: 0;
    padding: 0;
}

nav li {
    display: inline-block;
    padding: 0;
}

nav li:not(:first-child):before {
    content: '•';
    padding: 0 6px;
}



div.mod-logo {
    padding: 20px 30px;
    font-size: 28px;
    font-weight: bold;
}

@media (min-width: 1000px) {
    .two-cols {
        display: flex;
        justify-content: space-between;
    }

    .two-cols > div {
        width: 50%;
    }

    .two-cols div.mod + div.mod {
        margin-left: 0;
    }
}

@media (min-width: 1000px) and (max-width: 1600px) {
    .two-cols .two-cols {
        display: block;
    }

    .two-cols .two-cols > div {
        width: 100%;
    }
}

.flex-center {
    align-items: center;
}



@media (min-width: 1350px) {
    .header-buch {
        display: flex;
        align-items: flex-end;
    }
}

.col-1 {
    background-color: #fef9e2;
}

.col-2 {
    background-color: #e9f6fc;
}

.col-3 {
    background-color: #F6F6F6;
}

.gallery {
    margin-bottom: 20px;
}

.gallery img {
    display: block;
    width: 100%;
    max-width: 325px;
}

h2 > small {
    display: block;
}

img.author {
    display: block;
    width: 100%;
    border-radius: 50%;
    max-width: 300px;
}

.img-video {
    width: 360px;
    border-radius: 12px;
}

@media (max-width: 1440px) {
    .img-video {
        max-width: 200px;
    }
}