.custom-button:before{content:"";position:absolute;top:6px;left:-2px;width:calc(100% + 4px);height:calc(100% - 12px);background-color:#212121;transform:scaleY(1);transition:transform .3s ease-in-out;z-index:1}.custom-button:hover:before{transform:scaleY(0)}.custom-button:after{content:"";position:absolute;left:6px;top:-2px;height:calc(100% + 4px);width:calc(100% - 12px);background-color:#212121;transform:scaleX(1);transition:transform .3s ease-in-out .5s;z-index:2}.custom-button:hover:after{transform:scaleX(0)}