CSS layout

Don't eat tomatoes 2021-05-03 11:23:03
css layout


  • Layout : Divide the page into pieces , Press left middle right 、 Top, middle and bottom .
  • The layout is usually divided into :
  1. Fixed width layout , The general width is 960/1000/1024px
  2. Not fixed width layout , The layout is mainly based on the principle of document flow ( It's generally used in mobile phones ).
  3. Responsive layout : stay PC Top fixed width , There is no fixed width on the phone , It's a hybrid layout .
  • Two ideas of layout :
  1. From big to small : Set the big picture first , Then refine the small layout of each part .
  2. From small to large : Finish the little layout first , And then combine them into a big layout .
  • CSS Three patterns of layout

image.png 1. float Layout

step

  1. Add... To the child element float: left and width
  2. Add... To the parent element .clearfix

image.png Some experience :

  • Experienced people will leave some space or leave the last one blank width
  • There's no need to be responsive , Because there's no IE, And this layout is dedicated to IE To prepare the .
  • IE 6/7 There are double margin bug, There are two solutions : One is for IE 6/7 hold margin halve ; Second, add one display: inline-block.
  • In the use of border When debugging , sometimes border It interferes with the width , It can be changed to outline( Does not occupy a space ).
  • float When making an average layout , It's going to be negative margin.
  • float The programmer needs to calculate the width himself , inflexible .

2. flex Layout

course :css-tricks.com/snippets/cs…

  • flex Of container and items

image.png

  • flex container The style of :
  1. Let an element become flex Containers

image.png

  1. change items Direction of flow ( Spindle )

image.png

  1. Change the line

image.png

  1. Spindle alignment

image.png image.png

  1. Secondary axis alignment

image.png

image.png

  1. Multi line content ( Rarely use )

image.png

image.png

  • flex item Properties of
  1. order: control item The order that appears in the container .

image.png

  1. flex-grow: This is defined. item The ability to grow when necessary . It's accepted as a unitless value of proportion . It determines item The amount of space available inside the telescopic container .

image.png

  1. flex-shrink: This is defined. item The ability to contract when necessary .
  2. flex-basis: Control base width .
  3. align-self: This allows for a single item Override the default alignment ( Or by the align-items Specified alignment ).

image.png Can pass flex Frog game to practice flex Usage of :flexboxfroggy.com/#zh-cn

  • grid Layout

course :css-tricks.com/snippets/cs…

Two dimensional layout with Grid.

You can practice it with a little game grid Usage of :Grid Garden cssgridgarden.com/#zh-cn

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https://qdmana.com/2021/05/20210503112203821p.html

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