sup > a::after {
                content: "]";
            }

            .markdown-body h1 .octicon-link,
            .markdown-body h2 .octicon-link,
            .markdown-body h3 .octicon-link,
            .markdown-body h4 .octicon-link,
            .markdown-body h5 .octicon-link,
            .markdown-body h6 .octicon-link {
                color: var(--color-fg-default);
                vertical-align: middle;
                visibility: hidden;
            }

            .markdown-body h1:hover .anc