.tooltip {
    display:block;
    position:relative;
    border-bottom:1px dotted #666;
    text-align:left;
}

.tooltip .top {
    min-width:200px;
    max-width:95%px;
    top:-20px;
    left:50%;
    transform:translate(-50%,-100%);
    padding:10px 10px;
    color:#ffffff;
    background-color:#eee;
    font-weight:normal;
    font-size:14px;
    border-radius:8px;
    position:absolute;
    z-index:99999999;
    box-sizing:border-box;
    box-shadow:0 1px 8px rgba(0,0,0,0.5);
    display:none;
}

.tooltip:hover .top {
    display:block;
}

.tooltip .top i {
    position:absolute;
    top:100%;
    left:30%;
    margin-left:-15px;
    width:30px;
    height:15px;
    overflow:hidden;
}

.tooltip .top i::after {
    content:'';
    position:absolute;
    width:15px;
    height:15px;
    left:50%;
    transform:translate(-50%,-50%) rotate(45deg);
    background-color:#eee;
    box-shadow:0 1px 8px rgba(0,0,0,0.5);
}