css制作的tip提示框

<style>
div[data-tip] {
    position: relative;
    display: inline-block;
}
div[data-tip]:hover {
    cursor: pointer;
}
div[data-tip]:hover:before {
    content: attr(data-tip);
    background-color: #ea5415;
    color: #fff;
    padding: .8em 1em;
    position: absolute;
    left: 100%;
    top: -70%;
    margin-left: 8px;
    white-space: pre;
}
div[data-tip]:hover:after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-right: 8px solid #Ea5415;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
}
</style>
<div data-tip="前端迷">鼠标hover</div>