.side-menu {
  position: fixed;
  top: 0;
  left: -250px;
  z-index: 1000;
  padding: 0;
  width: 250px;
  height: 100%;
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
  background: #333;
  -webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.5s;
  overflow-y: auto;
}
.side-menu.active {
  left: 0;
}
.side-menu > ul.menu {
  overflow: hidden;
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
  -webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}
.side-menu > ul > li,
.side-menu li.parent {
  display: block;
  width: 100%;
  height: auto;
  transition: all 0.45s;
}
.side-menu > ul > li > a,
.side-menu li.parent > a {
  position: relative;
  display: block;
  padding: 0;
  height: 44px;
  border-top: 1px solid rgba(0, 0, 0, 0.3);
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  color: #ccc;
  text-indent: 1rem;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.5);
  /* line-height: 2.5rem; */
  transition: all 0.45s;
}
.side-menu li.parent > a:hover {
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
}
.side-menu li.parent > a:after {
  position: absolute;
  top: 18px;
  right: 1rem;
  width: 8px;
  height: 8px;
  border: 1px solid #ddd;
  border-width: 0 0 1px 1px;
  box-shadow: 2px rgba(0, 0, 0, 1);
  content: '';
  transition: all 0.45s;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  -ms-transform: rotate(45deg);
}
.side-menu li.parent .sub-menu {
  display: none;
  overflow: hidden;
  padding: 5px 0 5px 15px;
  border-top: 1px solid rgba(0, 0, 0, 0.3);
  background-color: #1a1a1a;
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}
.side-menu .sub-menu li {
  float: left;
  display: block;
  overflow: hidden;
  width: 33.33333333%;
  height: auto;
}
.side-menu .sub-menu.x2 li {
  width: 50%;
}
.side-menu .sub-menu a {
  display: block;
  padding: 0.8rem 0;
  color: #eee;
  transition: all 0.45s;
}
.side-menu .sub-menu a:hover {
  text-decoration: none;
}
.side-menu li.parent.open {
  background: rgba(255, 255, 255, 0.05);
}
.side-menu li.parent.open > a:after {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
}
.side-menu li.parent.open .sub-menu {
  display: block;
}
.screen-cover {
  position: fixed;
  top: 0;
  z-index: 999;
  display: none;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}