Exercises 1) Practice Environment 1.1) Internet Browsing Install Firefox on your practice computer. Install FireFox (Opens in a new tab/window. Come back to this window when you’re ready to go to the next step.) https://www.mozilla.org/en-US/firefox/new/ Page navigation ↑ HTML5 and CSS3 ← HTML5: In-Class Exercise H1-A – Basic HTML5 Document CSS3: CSS Box Model →