additional.css

/* Misc tidying of overall layout */
.content {
    padding: 15px;
}

.site-header {
    border-top: 5px solid #2a7ae2;
}

.card {
    border: 1px solid #2a7ae2;
    border-radius: .25rem;
}

.bg-img {
    background-size: cover;
    min-height: 180px;
    background-position: center;
    background-color: #fff;
}

.post-title {
    line-height: 1.3;
}

.post-header .bg-img {
    background-size: cover;
    min-height: 180px;
    background-position: center;
    background-color: #fff;
    border: 1px solid #2a7ae2;
    border-radius: .25rem;
}

/* Fixes the in-post indent applying to homepage */
.homepage-title {
    margin-left: 0px;
    padding-left: 0px;
}

/* Fixes weird table word break behaviour */
table {
    table-layout: fixed;
    word-break: break-word;
}

/* Fixes "tag" styling */
.tag,
.tag:visited {
    color: #828282;
}

/* Fixes code block styling */
.highlight,
code {
    background-color: #f8fbff !important;
}

/* Fixes icon / username alignment in footer */
.username,
.svg-icon {
    vertical-align: middle;
}

/* Styles the link to other blog */
.crosslink {
    width: 100%;
    padding: 0 20px;
    text-align: center;
}

/* Adds extra padding to top right links */
.page-link {
    padding: 5px;
}

/* Adds GitHub style links to headers on mouseover */
h2 {
    margin-left: -18px;
    padding-left: 8px;
}

h3 {
    margin-left: -16px;
    padding-left: 6px;
}

h4 {
    margin-left: -14px;
    padding-left: 4px;
}

h5 {
    margin-left: -12px;
    padding-left: 2px;
}

h6 {
    margin-left: -10px;
    padding-left: 0px;
}

h1 .octicon, h2 .octicon, h3 .octicon, h4 .octicon, h5 .octicon, h6 .octicon {
    visibility: hidden;
}

h1:hover .octicon, h2:hover .octicon, h3:hover .octicon, h4:hover .octicon, h5:hover .octicon, h6:hover .octicon {
    visibility: visible;
}

.octicon {
    fill: currentColor;
    padding: 0;
    margin-left: -16px;
    vertical-align: middle;
}

/* Table of contents */
.toc {
    float: right;
    border: 1px solid #2a7ae2;
    border-radius: 0.25rem;
    padding-top: 15px;
    padding-right: 15px;
    margin-left: 15px;
}

.toc b {
    margin-left: 20px;
}

.toc ul {
    list-style: none;
    margin-left: 10px;
}

.toc li {
    margin-left: 10px;
}