Responsive web design
for iphone 6/7/8 (375*667) + ipad (768*1024)

aaa

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

bbb

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

https://simple.wikipedia.org/wiki/List_of_colors
https://www.w3schools.com/css/tryit.asp?filename=trycss_float5
http://www.thaiall.com/google/chrome1.htm