CSS self-adaptation of images

When CSS is required to scale a picture, you can use the outer container 100% or any percentage,

The inner layer image img tag is not wide, with sass write after breakpoint mixin style is like this:

%;    . left_art{          float: left; text-align:center;          0  the 0 ;         }     } }     

If the width of the breakpoint is larger than the maximum size of the picture, it will not appear centered.

For example, mobile phone horizontal portrait will be very difficult to see.

This time CSS may not be able to do, or need JS to control the width of the outer container, and then margin:0 Auto;

_workscon_section = ($ (window). Width ()->? :($ (window). Width ()-        

The width of the film is 600px, less than 600 when the window width to calculate.

In more than 600 of the time, it should be 600, otherwise it will not be centered.