상단 메뉴 부분에 생긴 이것은 무엇??? 채택완료

/* 초기화 */
html {overflow-y:scroll}
body {margin:0;padding:0;font-size:0.75em;font-family:dotum; background:#000}
html, h1, h2, h3, h4, h5, h6, form, fieldset, img {margin:0;padding:0;border:0}
h1, h2, h3, h4, h5, h6 {font-size:1em;font-family:dotum}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {display:block}#hd ul, nav ul, #ft ul {margin:0;padding:0;list-style:none}
legend {position:absolute;margin:0;padding:0;font-size:0;line-height:0;text-indent:-9999em;overflow:hidden}
label, input, button, select, img {vertical-align:middle}
input, button {margin:0;padding:0;font-family:dotum;font-size:1em}
button {cursor:pointer}textarea, select {font-family:dotum;font-size:1em}
select {margin:0}
p {margin:0;padding:0;word-break:break-all}
hr {display:none}
pre {overflow-x:scroll;font-size:1.1em}
a:link, a:visited {color:#999;text-decoration:none}
a:hover, a:focus, a:active {color:#999;text-decoration:underline}/* 팝업레이어 */
#hd_pop {z-index:1000;position:relative;margin:0 auto;width:970px;height:0}
#hd_pop h2 {position:absolute;font-size:0;line-height:0;overflow:hidden}
.hd_pops {position:absolute;border:1px solid #e9e9e9;background:#fff}
.hd_pops_con {}
.hd_pops_footer {padding:10px 0;background:#000;color:#fff;text-align:right}
.hd_pops_footer button {margin-right:5px;padding:5px 10px;border:0;background:#393939;color:#fff}/* 상단 레이아웃 */
#hd {z-index:4;position:relative;min-width:970px}
.hd_zindex {z-index:10 !important}
#hd_h1 {position:absolute;font-size:0;line-height:0;overflow:hidden}
#hd_wrapper {position:relative;margin:0 auto;padding:0;width:970px;zoom:1}
#hd_wrapper:after {display:block;visibility:hidden;clear:both;content:""}/* 전체 검색 */
#hd_sch {float:left;margin-left:84px;padding:0;}
#hd_sch legend {position:absolute;margin:0;text-indent:-9999em;overflow:hidden}
#hd_sch #sch_stx {width:110px;height:24px;border:0;background:#fff;line-height:1.9em !important;line-height:1.6em}
#hd_sch #sch_submit {border:0;cursor:pointer}/* 텍스트 크기 조절 */
#text_size {float:left;margin:0 0 0 10px;letter-spacing:-3px}
#text_size button {margin:0;padding:1px 2px;border:1px solid #c3c6ca;background:transparent;vertical-align:middle;cursor:pointer}
.ts_up {font-size:1.167em !important}
.ts_up2 {font-size:1.3em !important}​