.fill-button{position:relative;overflow:hidden;z-index:1}.fill-button:before{content:"";position:absolute;top:0;left:0;width:0;height:100%;background-color:#fff;transition:width .4s ease;z-index:-1}.fill-button:hover:before{width:100%}.fill-button:hover{color:#111827}.cubic{transition:cubic-bezier(.215,.61,.355,1) .5s}