.range-wrap {
    position: relative;
    margin-top: 30px;
}

.range-value {
    position: absolute;
    top: -62%;
}

.range-value span {
    width: 30px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    background: #03a9f4;
    color: #fff;
    font-size: 12px;
    display: block;
    position: absolute;
    left: 50%;
    transform: translate(-50%, 0);
    border-radius: 6px;
}

.range-value span:before {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-top: 10px solid #03a9f4;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    margin-top: -1px;
}