* { box-sizing: boder-box; }

body { margin: 0; }

#slide-main {
  position: relative;
  z-index: 20;
  background: #fff;
  -webkit-transition: -webkit-transform .6s ease;
  transition: transform .6s ease;
}
@media (min-width: 640px) {

#slide-main { padding: 1em; }
}

/* .fake-section {
  background: #eee;
  height: 300px;
} */

.slide-tiles-a {
  width: 100%;
  position: relative;
  overflow: hidden;
}

.slide-tiles-a ul {
  margin: 0;
  padding: 0;
}

.slide-tiles-a li { list-style: none; }
@media (min-width: 640px) {

.slide-tiles-a li {
  float: left;
  width: 33.33%;
}
}

.slide-tiles-a a {
  margin: 1em;
  display: block;
  background: #222;
  padding-top: 73%;
  height: 0;
}

#slide-aside {
  position: fixed;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background: #eee;
  overflow-y: scroll;
  z-index: 10;
}

#slide-aside img {
  width: 100%;
  height: auto;
  vertical-align: top;
}

#slide-aside .wrapper { padding: 1em; }

#slide-aside .slide-close {
  width: 25px;
  display: block;
  position: absolute;
  top: 1em;
  right: 1em;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
}

.slide-show-detail { overflow: hidden; }

.slide-show-detail #slide-main {
  -webkit-transform: translateX(-60%);
  -ms-transform: translateX(-60%);
  transform: translateX(-60%);
}

.slide-visually-hidden {
  position: absolute;
  overflow: hidden;
  clip: rect(0 0 0 0);
  height: 1px;
  width: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
}