A brief introduction to the usage of clip clipping in css

The clip attribute is used to set the shape of the element. Used to clip absolutely positioned elements (absolute or fixed).

clip has three values:auto |inherit|rect. Inherit is inheritance, IE does not support this attribute, auto is the default. The first two are basically soy sauce, let's mainly talk about the rect attribute of clip.

clip’s rect attribute:clip:rect(top, right, bottom, left) four attribute values are indispensable;

These four How is the attribute value calculated? First look at the picture below

rect's top, right, bottom, left are calculated based on the upper left corner

Let’s take a look at a small demo

html：

css：

#demo { position: relative; border: 1px solid #ccc; width:140px; height: 140px; padding-top: 20px; } #demo u { width: 128px;height: 128px; position: absolute; background: url(words.png) 0 -624px no-repeat;transition: all .5s ease-in-out 0s} #demo p { text-align: center; line-height: 120px; background: url(words.png) 400px -624px no-repeat} #demo .c1 { clip: rect(0,128px,0,64px);} #demo .c2 { clip:rect(128px,64px,128px,0px)} #demo:hover>.c1 {clip:rect(0px,128px,128px,64px)} #demo:hover>.c2 {clip:rect(0px,64px,128px,0)}

Novice 1 If there are any errors, please correct me.

A little progress every day is a gain.

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