html {
  position: relative;
  height: 100%;
}
body {
  height: 100%;
}
.colorself {
  background: rgb(117, 117, 3);
}

.item {
  cursor: pointer;
}

.tree {
  padding-left: 1em;
  line-height: 1.5em;
  list-style-type: dot;
}