.comments .comment-content {
    background: none!important;
    -webkit-box-shadow: none!important;
    -moz-box-shadow: none!important;
    box-shadow: none!important;
    border-radius: 0!important;
    border: none!important;
}
.comments-list .children {
    border-left: 0!important;
}

.comments-list .children .comment:after {
    content: "";
    width: 0;
    height: 0;
    border-width: 0!important;
    border-color: transparent!important;
}

.comments-list .children .comment:before {
    content: "";
    width: 0;
    height: 0;
    background-color: transparent!important;
    border-bottom: 0!important;
    border-top: 0!important;
}