3.Jumbotron -- now I'm stuck


i figure it out but now I'm stuck on
.jumbotron p {
font size: 20px
color: #fff

Jumbotron height

You need semicolons between each of your property/value pairs, so definitely one at the end of that first line. Putting one at the end of the second line is optional because it is the last one, but it is good practice to add one anyway in case you add another property later.