.sitemap-boxes{
  display: flex;
  flex-wrap: wrap;
}
.sitemap-boxes .l-box {
  width: calc((100% / 3) - 1.6rem);
  margin-left: 2.4rem;
}
.sitemap-boxes .l-box:nth-child(3n + 1){
  margin-left: 0;
}
.sitemap-boxes .l-box:nth-child(n + 4){
  margin-top: 2.4rem;
}
.sitemap-boxes .l-box .t-head{
  margin-bottom: 1.6rem;
}
@media(min-width:600px) and (max-width:959.98px){
  .sitemap-boxes .l-box {
    width: calc((100% / 2) - 1.6rem);
    margin-left: 2.4rem !important;
  }
  .sitemap-boxes .l-box:nth-child(2n + 1){
    margin-left: 0 !important;
  }
  .sitemap-boxes .l-box:nth-child(n + 3){
    margin-top: 2.4rem;
  }
}
@media(max-width:599.98px){
  .sitemap-boxes .l-box {
    width: 100%;
    margin-left: 0;
  }
  .sitemap-boxes .l-box:nth-child(n + 2){
    margin-top: 2.4rem;
  }
}