.leftMenu a {
  text-decoration: none;
  display: block;
}

.leftMenu {
  background: #fff;
  left: -1000px;
  position: fixed;
  top: 40px;
  display: block;
  height: 100%;
  width: 60%;
  min-width: 140px;
  max-width: 440px;
  z-index: 90002;
  transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  -webkit-transition: all 0.4s ease;
  -o-transition: all 0.4s ease;
  position: fixed;
  overflow: auto;
}

.leftMenu.menu-open {
  left: 0;
}

.leftMenu ul {
  list-style: none;
  padding: 0;
  overflow: hidden;
}

.leftMenu ul li {
  position: relative;
  border-bottom: 1px solid #cecece;
  padding: 10px 0 10px 20px;
  overflow: hidden;
}
.leftMenu a {
  color: #888888;
}

.f2,
.f3 {
  height: 0;
  padding-left: 20px;
  overflow: hidden;
  position: relative;
  transition: height 0.4s ease;
  -moz-transition: height 0.4s ease;
  -webkit-transition: height 0.4s ease;
  -o-transition: height 0.4s ease;
}

.menu-dark-backdrop {
  background: rgba(0, 0, 0, 0);
  transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  -webkit-transition: all 0.4s ease;
  -o-transition: all 0.4s ease;
  width: 100%;
  position: fixed;
  top: 40px;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.menu-dark-backdrop.in {
  height: 100%;
  z-index: 4;
  background: rgba(0, 0, 0, 0.5);
}