.how-to-get-dor {
    background-color: #1e1e1e;
}

.how-to-get-dor h4 {
    position: relative;
    display: inline-block;
}

.how-to-get-dor h4::after {
    content: '';
    width: 40px;
    height: 3px;
    background-color: #f4a261;
    position: absolute;
    left: 50%;
    bottom: -10px;
    transform: translateX(-50%);
}