.registry-tree { font-family: sans-serif; font-size: 14px; margin-left: 20px;  } .registry-branch { margin-left: 20px;  padding-left: 10px;  border-left: 1px solid #ccc;  position: relative;  } .registry-branch:before { content: ""; position: absolute; left: -1px; top: 0; bottom: 50%; border-left: 1px solid #ccc;  } .registry-key { display: block; padding: 5px; background-color: #f0f0f0; border: 1px solid #ccc; border-radius: 4px; margin-bottom: 5px; }