.side-panel {
  position: absolute;
  top: 50%;
  bottom: 0px;
  width: 100%;
  left: 0px;
  height:100%;
  transition: left 0.3s, top 0.3s;
  background-color: white;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.side-panel.collapsed {
  left:-22rem;
}

.arrow {
  position: absolute;
  top: 1rem;
  left: 100%;  
  background-color: inherit;
  cursor:pointer;
}

.arrow i {
  transition: transform 0.3s;
}

.collapsed .arrow i {
  -webkit-transform: rotate(180deg);
  transform: rotate(180deg);
}

.side-panel.hidden {
  top:100%;
}

.content {
  height:100%;
  width:100%;
  overflow:hidden;
  overflow-y:auto;
}

@media screen and (min-width:44rem) {
  .side-panel {
    top:0px;
    width: 22rem;
    left:0px;
  }

  .side-panel.hidden {
    top:0px;
    width: 22rem;
    left:-24rem;
  }

}