JSFiddle - React, Tailwind, and code Playground

by Dmitriy Shvanyk

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<a href="#" class="question" data-tooltip="Задать вопрос">
    <i class="fa fa-question-circle"></i>
</a>

CSS

body {
    margin: 90px;
    text-align: center;
}
.question {
    position: relative;
    z-index: 2;
    cursor: pointer;
    font-size: 24px;
}
.question:before, .question:after {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}
.question:before {
    content: attr(data-tooltip);
    position: absolute; bottom: 110%; left: 50%;
    margin-bottom: 5px;
    margin-left: -80px;
    padding: 7px;
    width: 160px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    background: #E7E2E2;
    color: #000;    
    text-align: center;
    font-size: 14px;
    line-height: 1.2;
}
.question:after {
    content:" ";
    position: absolute; bottom: 110%; left: 50%;
    margin-left: -5px;
    width: 0;
    border-top: 5px solid #E7E2E2;
    border-right: 5px solid transparent;
    border-left: 5px solid transparent;    
    font-size: 0;
    line-height: 0;
}
.question:hover:before, .question:hover:after {
    visibility: visible;
    opacity: 1;
}