.sec-title {
    font-size: 16px;
    font-weight: 400;
    color: #7e7e7e;
    margin-bottom: 15px;
}

.item-title {
    font-size: 19px;
    font-weight: 600;
}

.timeline-head {
    display: inline-block;
    width: 100%;
    height: 1px;
    background-color: #383838;
    margin-top: 5px;
    margin-bottom: 20px;
    position: relative;
}

.timeline-head::after {
    content: "";
    display: inline-block;
    position: absolute;
    border-top: 10px solid #000;
    border-right: 7px solid transparent;
    border-left: 7px solid transparent;
    border-bottom: 7px solid transparent;
    top: -3px;
}