.sidebar {
    height: 100vH;
    height: calc(100vH - 89px);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}

.sidebar #bio {
    z-index: 12;
    position: absolute;
    bottom: 0;
    padding: 30px;
}

#index-sidebar {
    background-image: url(http://blog.markushermann.eu/assets/me_1000.png);
}

#content {
    margin-top: 20px;
}

#content pre {
    background-color: #f6f8fa;
    border-radius: 3px;
    font-size: 85%;
    line-height: 1.45;
    overflow: auto;
    padding: 16px;
}

blockquote {
    padding-left: 20px;
    border-color: lightgray;
    border-width: 1px;
    border-style: solid;
}

img {
    /*max-width: 100vH;*/
}