Can someone explain exactly what the point of this CSS code is? I don't really get what it does

HTML-CSS
#1 
        * { 
            box-sizing: border-box;
            }

A good explanation of what this code does would be MUCH appreciated, I didn’t really understand the one in the lesson. Thank you in advance! :slight_smile:

#2

Why reinvent the wheel when there are great articles that explain it :slight_smile: