.yousung21_header {
    width: 100%;
    max-width: 840px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;

}

.yousung21_header_top {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.yousung21_header_bottom {
    width: 100%;
    background-color: #1353b4;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-image: url("./images/t_bg.gif");
}

.yousung21_header_bottom_right {
    display: flex;
}

.yousung21_main {
    width: 100%;
    max-width: 840px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.yousung21_main_content {
    width: 100%;
    display: flex;
    gap: 13px;
}

.yousung21_main_content_left {
    width: 141px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.yousung21_main_content_right {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.yousung21_main-content_right_board {
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.yousung21_main_content_right_banner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.yousung21_main_content_right_banner > a {
    width: 23%;
}

.yousung21_main_content_right_banner > a > img {
    width: 100%;
}

.pic_li_lt {
    width: 100% !important;
}

footer {
    width: 100%;
    max-width: 840px;
    margin: 0 auto;
    padding: 10px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

footer > div {
    text-align: center;
}