com/public/less/_markdown.less

.markdown:not(code) {
    overflow: hidden;
    font-size: 16px;
    line-height: 1.6 !important;
    word-wrap: break-word;

    &.ui.segment {
        padding: 3em;
    }

    &.file-view {
        padding: 2em 2em 2em !important;
    }

    > *:first-child {
        margin-top: 0 !important;
    }

    > *:last-child {
        margin-bottom: 0 !important;
    }

    a:not([href]) {
        color: inherit;
        text-decoration: none;
    }

    .absent {
        color: #cc0000;
    }

    .anchor {
        position: absolute;
        top: 0;
        left: 0;
        display: block;
        padding-right: 6px;
        padding-left: 30px;
        margin-left: -30px;
    }

    .anchor:focus {
        outline: none;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        position: relative;
        margin-top: 1em;
        margin-bottom: 16px;
        font-weight: bold;
        line-height: 1.4;

        &:first-of-type {
            margin-top: 0 !important;
        }
    }

    h1 .octicon-link,
    h2 .octicon-link,
    h3 .octicon-link,
    h4 .octicon-link,
    h5 .octicon-link,
    h6 .octicon-link {
        display: none;
        color: #000000;
        vertical-align: middle;
    }

    h1:hover .anchor,
    h2:hover .anchor,
    h3:hover .anchor,
    h4:hover .anchor,
    h5:hover .anchor,
    h6:hover .anchor {
        padding-left: 8px;
        margin-left: -30px;
        text-decoration: none;
    }

    h1:hover .anchor .octicon-link,
    h2:hover .anchor .octicon-link,
    h3:hover .anchor .octicon-link,
    h4:hover .anchor .octicon-link,
    h5:hover .anchor .octicon-link,
    h6:hover .anchor .octicon-link {
        display: inline-block;
    }

    h1 tt,
    h1 code,
    h2 tt,
    h2 code,
    h3 tt,
    h3 code,
    h4 tt,
    h4 code,
    h5 tt,
    h5 code,
    h6 tt,
    h6 code {
        font-size: inherit;
    }

    h1 {
        padding-bottom: 0.3em;
        font-size: 2.25em;
        line-height: 1.2;
        border-bottom: 1px solid #eeeeee;
    }

    h1 .anchor {
        line-height: 1;
    }

    h2 {
        padding-bottom: 0.3em;
        font-size: 1.75em;
        line-height: 1.225;
        border-bottom: 1px solid #eeeeee;
    }

    h2 .anchor {
        line-height: 1;
    }

    h3 {
        font-size: 1.5em;
        line-height: 1.43;
    }

    h3 .anchor {
        line-height: 1.2;
    }

    h4 {
        font-size: 1.25em;
    }

    h4 .anchor {
        line-height: 1.2;
    }

    h5 {
        font-size: 1em;
    }

    h5 .anchor {
        line-height: 1.1;
    }

    h6 {
        font-size: 1em;
        color: #777777;
    }

    h6 .anchor {
        line-height: 1.1;
    }

    p,
    blockquote,
    ul,
    ol,
    dl,
    table,
    pre {
        margin-top: 0;
        margin-bottom: 16px;
    }

    hr {
        height: 4px;
        padding: 0;
        margin: 16px 0;
        background-color: #e7e7e7;
        border: 0;
    }

    ul,
    ol {
        padding-left: 2em;
    }

    ul.no-list,
    ol.no-list {
        padding: 0;
        list-style-type: none;
    }

    ul ul,
    ul ol,
    ol ol,
    ol ul {
        margin-top: 0;
        margin-bottom: 0;
    }

    ol ol,
    ul ol {
        list-style-type: lower-roman;
    }

    li > p {
        margin-top: 0;
    }

    dl {
        padding: 0;
    }

    dl dt {
        padding: 0;
        margin-top: 16px;
        font-size: 1em;
        font-style: italic;
        font-weight: bold;
    }

    dl dd {
        padding: 0 16px;
        margin-bottom: 16px;
    }

    blockquote {
        margin-left: 0;
        padding: 0 15px;
        color: #777777;
        border-left: 4px solid #dddddd;
    }

    blockquote > :first-child {
        margin-top: 0;
    }

    blockquote > :last-child {
        margin-bottom: 0;
    }

    table {
        width: auto;
        overflow: auto;
        word-break: keep-all;
        display: block;
    }

    table th {
        font-weight: bold;
    }

    table th,
    table td {
        padding: 6px 13px !important;
        border: 1px solid #dddddd !important;
    }

    table tr {
        background-color: #ffffff;
        border-top: 1px solid #cccccc;
    }

    table tr:nth-child(2n) {
        background-color: #f8f8f8;
    }

    img {
        max-width: 100%;
        box-sizing: border-box;
    }

    .emoji {
        max-width: none;
    }

    span.frame {
        display: block;
        overflow: hidden;
    }

    span.frame > span {
        display: block;
        float: left;
        width: auto;
        padding: 7px;
        margin: 13px 0 0;
        overflow: hidden;
        border: 1px solid #dddddd;
    }

    span.frame span img {
        display: block;
        float: left;
    }

    span.frame span span {
        display: block;
        padding: 5px 0 0;
        clear: both;
        color: #333333;
    }

    span.align-center {
        display: block;
        overflow: hidden;
        clear: both;
    }

    span.align-center > span {
        display: block;
        margin: 13px auto 0;
        overflow: hidden;
        text-align: center;
    }

    span.align-center span img {
        margin: 0 auto;
        text-align: center;
    }

    span.align-right {
        display: block;
        overflow: hidden;
        clear: both;
    }

    span.align-right > span {
        display: block;
        margin: 13px 0 0;
        overflow: hidden;
        text-align: right;
    }

    span.align-right span img {
        margin: 0;
        text-align: right;
    }

    span.float-left {
        display: block;
        float: left;
        margin-right: 13px;
        overflow: hidden;
    }

    span.float-left span {
        margin: 13px 0 0;
    }

    span.float-right {
        display: block;
        float: right;
        margin-left: 13px;
        overflow: hidden;
    }

    span.float-right > span {
        display: block;
        margin: 13px auto 0;
        overflow: hidden;
        text-align: right;
    }

    code,
    tt {
        padding: 0.2em 0;
        margin: 0;
        font-size: 85%;
        background-color: rgba(0, 0, 0, 0.04);
        border-radius: 3px;
    }

    code:before,
    code:after,
    tt:before,
    tt:after {
        letter-spacing: -0.2em;
        content: "\00a0";
    }

    code br,
    tt br {
        display: none;
    }

    del code {
        text-decoration: inherit;
    }

    pre > code {
        padding: 0;
        margin: 0;
        font-size: 100%;
        word-break: normal;
        white-space: pre;
        background: transparent;
        border: 0;
    }

    .highlight {
        margin-bottom: 16px;
    }

    .highlight pre,
    pre {
        padding: 16px;
        overflow: auto;
        font-size: 85%;
        line-height: 1.45;
        background-color: #f7f7f7;
        border-radius: 3px;
    }

    .highlight pre {
        margin-bottom: 0;
        word-break: normal;
    }

    pre {
        word-wrap: normal;
    }

    pre code,
    pre tt {
        display: inline;
        max-width: initial;
        padding: 0;
        margin: 0;
        overflow: initial;
        line-height: inherit;
        word-wrap: normal;
        background-color: transparent;
        border: 0;
    }

    pre code:before,
    pre code:after,
    pre tt:before,
    pre tt:after {
        content: normal;
    }

    kbd {
        display: inline-block;
        padding: 3px 5px;
        font-size: 11px;
        line-height: 10px;
        color: #555555;
        vertical-align: middle;
        background-color: #fcfcfc;
        border: solid 1px #cccccc;
        border-bottom-color: #bbbbbb;
        border-radius: 3px;
        box-shadow: inset 0 -1px 0 #bbbbbb;
    }

    input[type="checkbox"] {
        vertical-align: middle !important;
    }

    .csv-data td,
    .csv-data th {
        padding: 5px;
        overflow: hidden;
        font-size: 12px;
        line-height: 1;
        text-align: left;
        white-space: nowrap;
    }

    .csv-data .blob-num {
        padding: 10px 8px 9px;
        text-align: right;
        background: #ffffff;
        border: 0;
    }

    .csv-data tr {
        border-top: 0;
    }

    .csv-data th {
        font-weight: bold;
        background: #f8f8f8;
        border-top: 0;
    }

    .ui.list .list,
    ol.ui.list ol,
    ul.ui.list ul {
        padding-left: 2em;
    }
}

.repository.wiki.revisions {
    .ui.container > .ui.stackable.grid {
        -ms-flex-direction: row-reverse;
        flex-direction: row-reverse;

        > .header {
            margin-top: 0;

            .sub.header {
                padding-left: 52px;
                word-break: break-word;
            }
        }
    }
}

.file-revisions-btn {
    display: block;
    float: left;
    margin-bottom: 2px !important;
    padding: 11px !important;
    margin-right: 10px !important;

    i {
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
}