avicoder

    * { outline: 2px dotted red }
    * * { outline: 2px dotted green }
    * * * { outline: 2px dotted orange }
    * * * * { outline: 2px dotted blue }
    * * * * * { outline: 1px solid red }
    * * * * * * { outline: 1px solid green }
    * * * * * * * { outline: 1px solid orange }
    * * * * * * * * { outline: 1px solid blue }