List of Mistakes
1. Main should not be in < >.
2. Body should have { } not [ ].
3. There should not be a “4” on line 35.
4. There should not be < > on line 52.
5. Font size should be determined by ems OR pixels, not both.
6. Height is spelled wrong on line 46.
7. Background-color is spelled wrong on line 33.
8. "width" should not be capitalized on line 45.
9. Width should be put in percentages not pixels.
10. There is no unit put after the padding and margins in the main.