.comment-parent {
    position: relative;
}

.comment-parent::after {
    content: '';
    position: absolute;
    top: 35px;
    left: 15px;
    height: auto;
    width: 2px;
    background-color: rgba(222, 226, 230, 0.35);
    z-index: 1;
}

.comment-children {
    position: relative;
    margin-left: 30px;
}

.comment-children .comment-item {
    position: relative;
}

.comment-children .comment-item::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -60px;
    width: 48px;
    height: 50px;
    border-bottom: 2px solid rgba(222, 226, 230, 0.35);
    border-left: 2px solid rgba(222, 226, 230, 0.35);
    border-bottom-left-radius: 94px;
}

.comment-children > .comment-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: -60px;
    top: -85px;
    bottom: 10px;
    width: 2px;
    background-color: rgba(222, 226, 230, 0.35);
}

.comment-children > .comment-item:last-child::after {
    content: '';
    position: absolute;
    left: -2px;
    top: 34px;
    height: 15px;
    width: 2px;
    background-color: #fff;
    z-index: 1;
}