h4 {
    font-weight: 700;
    font-size: 24px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

h4::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background-color: #0d6efd; /* Bootstrap primary */
    border-radius: 2px;
}