.btn{border:2px solid #facc15;box-sizing:border-box;border-radius:4px;cursor:pointer;position:relative;overflow:hidden;isolation:isolate;transition:color .3s ease,background-color .3s ease;font-weight:500}.btn-sm{padding:6px 12px;font-size:14px}.btn-md{padding:8px 16px;font-size:15px}.btn-lg{padding:10px 20px;font-size:16px}.btn>*{position:relative;z-index:1}.btn:after,.btn:before{content:"";position:absolute;inset:-2px;border-radius:inherit;transition:transform .3s ease;transform-origin:left;z-index:0}.btn-border-reveal{background-color:black;color:#facc15}.btn-border-reveal:after{background-color:#facc15;transform:scaleX(0)}.btn-border-reveal:hover:after{transform:scaleX(1)}.btn-border-hide,.btn-border-reveal:hover{background-color:#facc15;color:black}.btn-border-hide:before{background-color:black;transform:scaleX(0)}.btn-border-hide:hover:before{transform:scaleX(1)}.btn-border-hide:hover{background-color:black;color:#facc15}