span.element-title {
    color: #4d4d4d;
    font-size: 18px;
    position: relative;
}

span.element-title::before {
    position: absolute;
    content: '';
    width: 153px;
    height: 1px;
    background-color: #4d4d4d;
    left: 0;
    bottom: -2px;
}