.underline-links a {position: relative; display: inline-block;} .underline-links a::before { content: ''; position: absolute; z-index: 0; left: 0; right: 100%; bottom: 0; background: #000; height: 1px; -webkit-transition-property: right; transition-property: right; -webkit-transition-duration: 0.2s; transition-duration: 0.2s; -webkit-transition-timing-function: ease-out; transition-timing-function: ease-out; } .underline-links a:hover:before {right: 0 !important;}

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