CSS for three-column picture, such as wide-spaced layout

Each picture block left floats, width 30%, left margin 2.5%:
100%= (2.5%+30%) + (2.5%+30%) + (2.5%+30%) +2.5%

   
 
  
 
 Three-column picture and other wide layout             

The simple and practical percentage layout is also suitable for mobile WAP page layouts:

min-width:320px; max-width:420px; width:100%; Overflow-x: Hidden; margin:0 Auto;

The minimum width is 320px, the maximum width is 420px, the width is automatically adjusted between 320px and 420px, and looks fine.
Only use the width attribute percentage value in the label, such as Width= "40%", without setting the Height property, so that the picture can be scaled by its original scale.
The blocks inside the container can also be arranged in percentages, such as 60% on the left and 40% on the right.

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