.site-header {
    font-size: 2em;
    padding: 0.7em 0;
    background-color: $brand-color;
    border-top: 3px solid rgba(#000, .5);
    @media screen and (max-width: $mobile-width) {
        text-align: center;
    }

    .avatar {
        height: 3em;
        width: 3em;
        border: 3px solid rgba(#fff, .7);
        border-radius: 1.5em;
        margin-right: 0.8em;
        float: left;
        @media screen and (max-width: $mobile-width) {
            float: none;
            margin-right: 0;
        }
    }

    h1 {
        font-size: 1em;
        line-height: 1em;
        margin: 0;
        .title {
            display: inline-block;
            color: $site-title-color;
            font-weight: bold;
            margin-top: 0.5em;
            &.slim {
                margin-top: 0;
            }
            @media screen and (max-width: $mobile-width) {
                margin-top: 0;
            }
        }
        .description {
            margin: 0;
            font-size: 0.6em;
            line-height: 1em;
            margin-top: 0.5em;
            color: lighten($site-title-color, 20%);
        }
    }
}