Zijun Liao13,409 Points
I am confused about the margin-bottom attribute
I am confused about the margin-bottom attribute at 3:58, Guil says 26px, and 1em equals to 16px, why not set the margin-bottom to 1.625em /* 26px / 16px*/
Kyle Hartigan16,463 Points
You are correct. EM's are a scalable unit relative to font-size, where as pixels are fixed.