/* BASIC css start */
.board_side { margin-bottom: 44.5px; font-size: 18px; }
.board_side .sub_menu { display: flex;align-items: center; justify-content: center;}
.board_side .sub_menu li { width: 20%; height: 40.5px; }
.board_side .sub_menu li a { display: block; text-align: center; width: 100%; height: 100%; color: #A9A9A9; border-bottom: 1px solid #D1D1D1; }
.board_side .sub_menu li a:hover,
.board_side .sub_menu li a.active { color: #007766; border-bottom: 2px solid #007766 }

.sub_content .content {
    float: left;
    width: 960px;
    padding: 0 0 0 40px;
}
/* BASIC css end */