Merge branch 'exercise3/what-is-tdd' of https://github.com/rht-labs/enablem...

acammies

2018-04-17 4e155d45045fdb1f861be0d61986c6131af5ff18

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p.tip {
  border-left-color: #f66;
}
p.tip:before {
  content: "!";
  background-color: #f66;
}