body {
  height: 95vh;
  padding: 0;
}
.sidebar {
  width: 200px;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background-color: #000;
  overflow-x: hidden;
}
.sidebar li {
  color: #fff;
}
.sidebar a {
  color: #fff;
  text-decoration: none;
  display: block;
}
.container {
  max-width: 1000px;
  height: 100%;
  margin-left: 200px;
  transition: all 0.4s ease-out;
  display: none;
}
.container.focused {
  display: block;
}
#container-editor {
  border: 1px solid #ccc;
}