.balloon{position:relative;background:#fff;margin-top:-4px}.balloon:after{content:"";position:absolute;right:auto;top:-10px;left:15px;width:0;height:0;margin:auto;border-color:transparent transparent #fff;border-style:solid;border-width:0 10px 10px}.underline-animation:after{content:"";display:block;height:2px;background:#333;position:relative;left:50%;width:0;transition:all .25s ease-in-out}.underline-animation:hover:after{left:0;width:100%}@media (max-width:768px){.underline-animation:after,.underline-animation:hover:after{background:none}}