Recent interview front-end questions finishing (CSS section)

Sit down and summarize the most recent interview questions:

One, the CSS section

1,html the vertical center of the element

Answer:

<div id= "box" >     <div>      Test     </div>   </div> #box {       width:200px;       height:200px;      Text-align:center;      Vertical-align:middle;      Display:table-cell;      }

The most 2,css test is flex;

<! DOCTYPE html>
Suggest to look at this piece more.
3, then the CSS also examines the clear floating method:
Answer:
Clear:both; Overflow:hidden; pseudo-class;
4, is relative positioning and absolute positioning related knowledge points
For example: What are the attribute values of position, each meaning and usage.
Recent interview front-end questions finishing (CSS section)