How to use CSS to automatically scale the height of an image

We know that in list layouts such as waterfall flow pictures you can often see using CSS to control the width and height of pictures in DIVs. In fact, such a layout is very simple. I will explain it to you in detail today. .

When encountering such a DIV CSS layout, it is actually very simple. We only need to control the width of the image, and the height of the image does not need to be set, that is, the height of the image will automatically adapt to the scaling ratio (if the height is not set, the height value defaults is auto-adaptive).

As shown above, add a DIV box named ".imgbox" with CSS and the width of the image is 252px. At this time, how to write CSS to make the height of the image in object automatically scale according to the width:

.imgbox img{width:252px}

It’s that simpleCSS selectorYou can control the width of the image in the DIV box ".imgbox" , without setting the CSS height (height) style, so that the default image will scale proportionally to the adaptive width.

Summary:

For novices, they may forget that the width and height are adaptive by default if they are not set, so they may encounter the problem of setting the image width and want to set it. Such a fixed thinking. In fact, under the requirement of fixed image width and adaptive height in CSS layout, CSS only needs to set the width value, and the height can achieve the desired layout effect without adding settings.

If the height and width of the image are fixed in the layout, no matter how big or proportional the image is, the width and height of the image in the layout are fixed. In this case, you need to set a fixed width and height for the image at the same time. value.

I believe you have mastered the methods after reading these analyses. For more exciting information, please pay attention to other related articles on the php Chinese website!

Related reading:

How to make DIV adaptive height

in HTML How to use CSS to hide divs

Detailed explanation of front-end responsive layout, responsive images, and self-made grid system

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