.custom{display:inline-block;width:1em;height:1em;vertical-align:-.12em;background-color:currentColor;mask-repeat:no-repeat;mask-position:center;mask-size:contain;-webkit-mask-repeat:no-repeat;-webkit-mask-position:center;-webkit-mask-size:contain}.custom-kwai{mask-image:url('../img/icons/kwai.svg');-webkit-mask-image:url('../img/icons/kwai.svg')}