LESS
.vertical-middle(@tag) { text-align: center!important; &:after { content: ''; display: inline-block; width: 0; height: 100%; vertical-align: middle; } @el: ~"@{tag}"; & > @{el} { display: inline-block!important; vertical-align: middle!important; text-align: left; }} 0 0 0 0 0LESS