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(0)Written in front
Telling about a case in an article I saw on Zhihu, it opened my mind and admired me Extremely, I found the original text the next day and praised it for $
5 yuan. The original text address, the case uses a lot of CSS3 attributes.
(1) Effect demonstration
##(2) Knowledge points and effects
<div class="trunc-list-wrapper" id="mylist"> <ul class="trunc-list"> <li> <a href="#">Home</a> </li> ... <li aria-hidden="true" class="control control--open"> <a href="#mylist"><span>more</span></a> </li> <li aria-hidden="true" class="control control--close"> <a href=""><span>less</span></a> </li> </ul> </div> .trunc-list-wrapper {height: 2.25em;overflow: hidden;padding-right: 3.5em; }.trunc-list { display: flex;flex-wrap: wrap;position: relative; }.trunc-list li { flex: 1 0 auto; }.control {position: absolute;top: 0;right: -3.5em;width: 3.5em;height: calc((2.25em - 100%) * -1000);max-height: 2.25em;overflow: hidden; }.control--close {display: none; }The above is a simple codedisplay: flex; Make the internal elements of .trunc-list become flex itemsflex-wrap: wrap; When the width is not enough, the internal elements will wrap, so when the browser window is scaled to a certain width, the height of .trunc-list will change.
The zoomed element cannot be seen because the height of .trunc-list-wrapper: 2.25em;overflow: hidden; causes the
element to be hidden.
The change in the height of trunc-list makes height: calc((2.25em - 100%) * -1000); take effect, you can see more,
max-height: 2.25em; limits the maximum height.
#myList is a valid stroke point, the following css takes effect
.trunc-list-wrapper:target .control--open { display: none; }.trunc-list-wrapper:target .control--close { display: block; }At the same time, the following css takes effect
.trunc-list-wrapper:target { height: auto; }Hidden elements can be seenWhen less is clicked, because it is an invalid anchor point, it is relative to the clearing of the above effects.
4. Complete code
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>响应式的另一种思考</title><style>/* Basic common settings: */* { box-sizing: border-box;}html { line-height: 1.25; font-family: 'Lato', sans-serif;}.trunc-list-wrapper { height: 2.25em; overflow: hidden; padding-right: 3.5em;}.trunc-list { list-style: none; display: flex; flex-wrap: wrap; margin: 0; padding: 0; position: relative;}.trunc-list li { margin: 0; padding: 0; flex: 1 0 auto;}.trunc-list a { display: block; padding: 0.5em; text-align: center; white-space: nowrap; color: #fff; background:red;}.trunc-list a:hover, .trunc-list a:active, .trunc-list a:focus { background: red; }.control { position: absolute; top: 0; right: -3.5em; width: 3.5em; height: calc((2.25em - 100%) * -1000); max-height: 2.25em; overflow: hidden;}.control a { text-decoration: none;}.control span { font-size: 0.75em; font-style: italic;}.control--close { display: none;}.trunc-list-wrapper:target { height: auto;}.trunc-list-wrapper:target .control--open { display: none;}.trunc-list-wrapper:target .control--close { display: block;}</style></head><body><div class="trunc-list-wrapper" id="mylist"> <ul class="trunc-list"><li> <a href="#">Home</a></li><li> <a href="#">Blog</a></li><li> <a href="#">About Us</a></li><li> <a href="#">Contact Us</a></li><li> <a href="#">Help</a></li><li> <a href="#">Login</a></li><li> <a href="#">Sign In</a></li><li aria-hidden="true" class="control control--open"> <a href="#mylist"><span>more</span></a></li><li aria-hidden="true" class="control control--close"> <a href=""><span>less</span></a></li> </ul></div><p>改变视口宽度大小来观察效果</p></body></html>View Code
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