
CSS- F.A.Q
- Vertical/ horizontal align using plain css
- position: absolute vs relative
- box-sizing: content-box vs border-box
- css class(es) precedence in css or html
- .a.b vs .a .b
- visibility: hidden vs display:none vs opacity: none
- em vs rem vs % vs vh
- Box Model (MBPC)
- grid layout vs flex-box layout
- center align a text horizontally + vertically inside parent div.
- place one div in horizontal + vertical centre of parent div.
- place four sub-divs at four corner and one div in centre of a parent div using pure css.

- exercise CSS layouts @ https://www.w3schools.com/css/css_templates.asp