@media only screen and (min-width:641px) {/*pc*/
  #space50{clear: both;height: 30px;}
  ul#top_booklist li b em {padding: 12px 0;}
  ul#top_booklist li:first-child img {width: 74%;}

  ul#top_booklist li:first-child a::before {
    content: '';
    width: 2.2vw;
    height: 2.2vw;
    min-width: 40px;
    min-height: 40px;
    background: url(/sp/index/img/new_tag.png) no-repeat;
    background-position: center center;
    background-size: 100% 100%;
    position: absolute;
    top: -12px;
    right: 16%;
    z-index: 2;
  }
}
@media only screen and (max-width:640px) {/*sm*/
}