#article-container pre[class*='language-'] &.line-numbers position relative > code display block position relative padding 8px 0 8px 58px .line-numbers-rows position absolute top 0 left 0 color var(--efu-secondtext) border-right var(--style-border-always) width 45px padding 8px 0 & > span display block counter-increment linenumber pointer-events none text-align center &:before padding 0 0.5em content counter(linenumber)