Revise topics covered in previous lessons. Engage with students to identify areas struggling with or ask for suggestions for topics to cover
Aim: Make sure understand col-sm, col-md... differences and can combine them.
Exercise: Give them image gallery grid. Tell them that want it to be 4x4 normally. But on smaller screen sizes needs to be 3x6, Then 2x8
Exercise: What is the bootstrap grid system out of?