Hi student,
No sweat. You're so close! It looks like you're not using flexbox which is definitely the recommended way to layout and center content. I'm going to give you a couple pieces because you're pretty much there. First, notice your pricing element is overflowing. This is because you're unnecessarily providing width: 100%, let's let the defaults handle the width here and remove that, . This will allow the width of width: 100%pricing to fill its parent without regard for the width of its own child content. Next, let's use flexbox by adding display: flex to your pricing element.
And voilà ! That should render your .pricing-tiers within the .pricing element. Does this look how it should? Definitely play around a bit with flexbox and let me know if you have anymore questions!