.hover-underline-gradient{z-index:1}.hover-underline-gradient:after{content:"";display:block;width:0;height:80%;background-image:linear-gradient(90deg,#00daef,#105eff);border-radius:10px;transition:width .3s ease-in-out;position:absolute;bottom:-10px;z-index:-1;margin:0 auto}.hover-underline-gradient:hover:after{width:90%}