html, body {
  padding: 0;
  margin: 0;
  height: 100%;
  background-color: #444;
  font-family: sans-serif;
  overflow: hidden;
}

:focus {
  outline: 0;
}

#container {
  height: 100%;
}

#sidebar {
  position: absolute;
  left: -300px;
  top: 0;
  width: 370px;
  height: 100%;
  box-shadow: 2px 0 20px 0 black;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  transition: left 0.5s, background-color 0.3s;
  background-color: rgba(255, 255, 255, 0.1);
  z-index: 100;
}

#sidebar:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

#sidebar.focused {
  left: 0;
}

#icons {
  margin-right: 22px;
  transition: opacity 0.5s;
  z-index: 10;
}

#icons div {
  text-align: center;
  margin: 30px 0;
}

#icons .fa {
  color: #ccc;
  font-size: 30px;
}

#sidebar.focused #icons {
  opacity: 0;
}

#menu {
  width: 100%;
  height: 100%;
  background-color: red;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  transition: opacity 0.5s;
  box-sizing: border-box;
  padding-top: 70px;
}

#sidebar.focused #menu {
  opacity: 1;
}

#menu .item {
  height: 70px;
  line-height: 70px;
  color: white;
  font-size: 25px;
  padding-left: 90px;
  box-sizing: border-box;
  cursor: default;
  display: none;
  cursor: pointer;
}

#menu .item:hover {
  background-color: rgba(0, 0, 0, 0.3);
}

#menu .item-focus {
  background-color: white;
  color: red !important;
}

#menu .item .fa {
  width: 40px;
}

#sidebar.focused #menu .item {
  display: block;
}

.mainbox {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 40px 40px 0 120px;
}

#search-box-placeholder {
  width: 70%;
  height: 50px;
  line-height: 50px;
  background-color: #666;
  box-sizing: border-box;
  padding-left: 15px;
  cursor: pointer;
  font-size: 25px;
  color: #aaa;
}

#search-box-placeholder:hover,
.search-box-placeholder-focus {
  color: black !important;
  background-color: white !important;
}

#content {
  height: 100%;
  position: relative;
}

#content .content {
  white-space: nowrap;
  font-size: 0;
  overflow: hidden;
  padding: 50px;
  margin: -50px;
}

#content h1 {
  font-size: 30px;
  height: 80px;
  padding: 0;
  margin: 0;
  line-height: 80px;
}

#content .item {
  display: inline-block;
  width: 200px;
  height: 200px;
  padding-bottom: 50px;
  background-color: #666;
  font-size: 1rem;
  margin-right: 20px;
  cursor: pointer;
}

#content .item-focus {
  background-color: white;
  transform: scale(1.08);
  transition: all .2s ease-in-out;
}

#content .animate {
  width: 25%;
  padding-bottom: 0;
  transition: padding-bottom 0.3s ease;
}

#content .placeholder {
  width: 25%;
  padding-bottom: calc(30% + 80px);
}

.contentgroup {
  width: 100%;
  z-index: 2;
  opacity: 1;
  transition: all .2s ease-in-out;
}

.contentgroup.fading-out {
  opacity: 0;
  display: none;
}