.pdf-tabs { display: flex; flex-direction: row-reverse; }
.pdf-tabs .box { box-sizing: border-box; position: relative; display: flex; align-items: center; width: 120px; height: 50px; border: 1px solid #ddd; border-radius: 5px; cursor: pointer; }
.pdf-tabs .box span { flex: 1; display: block; padding: 0 15px; background: url(/_res/unist/me/img/content/pdf-tabs-arr.png) no-repeat center right 15px / 8px auto; font-size: 15px; font-weight: 600; line-height: 160%; letter-spacing: -.02em; color: #333; }
.pdf-tabs .box ul { position: absolute; top: calc(100% + 5px); right: -1px; display: none; width: 100%; padding-top: 5px; background-color: #fff; border: 1px solid #ddd; border-radius: 5px; }
.pdf-tabs .box ul li a { display: block; padding: 0 15px 5px; font-size: 14px; font-weight: 600; line-height: 160%; letter-spacing: -.02em; color: #333; }