CSS collapse/expand

Question

我有一个纯粹的 CSS CSS Expand/Collapse div 是基于别人的代码 @ here 默认情况下隐藏文本是可折叠的但是它如果点击后文本会展开就更好了。

有人对如何编辑此代码以在单击最小化之前最小化文本有任何建议吗？如果避免 javascript 并且 Wordpress 可压缩会更好。

    <main>
  <h2>CSS Expand/Collapse Section</h2>
  <input id="toggle" type="checkbox" checked>
  <label for="toggle">Hidden Kitten</label>
  <div id="expand">
    <section>
      <p>mew</p>
    </section>
  </div>
  <section>
    <h3>Other content</h3>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas porta non turpis faucibus lobortis. Curabitur non eros rutrum, gravida felis non, luctus velit. Ut commodo congue velit feugiat lobortis. Etiam nec dolor quis nulla bibendum blandit vitae nec enim. Maecenas id dignissim erat. Aenean ac mi nec ante venenatis interdum quis vel lacus.
    </p>
    <p>Aliquam ligula est, aliquet et semper vitae, elementum eget dolor. In ut dui id leo tristique iaculis eget a dui. Vestibulum cursus, dolor sit amet lacinia feugiat, turpis odio auctor nisi, quis pretium dui elit at est. Pellentesque lacus risus, vulputate sed gravida eleifend, accumsan ac ante. Donec accumsan, augue eu congue condimentum, erat magna luctus diam, adipiscing bibendum sem sem non elit.</p>
  </section>
</main>

CSS

       @import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700);

body {
  font-family: "Open Sans", Arial;
  background: #CCC;
}
main {
  background: #EEE;
  width: 600px;
  margin: 20px auto;
  padding: 10px 0;
  box-shadow: 0 3px 5px rgba(0,0,0,0.3);
}
h2 {
  text-align: center;
}
p {
  font-size: 13px;
}
input {
  display: none;
  visibility: hidden;
}
label {
  display: block;
  padding: 0.5em;
  text-align: center;
  border-bottom: 1px solid #CCC;
  color: #666;
}
label:hover {
  color: #000;
}
label::before {
  font-family: Consolas, monaco, monospace;
  font-weight: bold;
  font-size: 15px;
  content: "+";
  vertical-align: text-top;
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-right: 3px;
  background: radial-gradient(ellipse at center, #CCC 50%, transparent 50%);
}
#expand {
  height: 0px;
  overflow: hidden;
  transition: height 0.5s;
  background: url(http://placekitten.com/g/600/300);
  color: #FFF;
}
section {
  padding: 0 20px;
}
#toggle:checked ~ #expand {
  height: 250px;
}
#toggle:checked ~ label::before {
  content: "-";
}

Answer 1

我认为您希望图像开始折叠。

您需要做的就是从输入复选框中删除 checked 属性以实现此目的。

变化：

<input id="toggle" type="checkbox" checked>

收件人：

<input id="toggle" type="checkbox">

这是您在可运行代码段中的代码：

body {
  font-family: "Open Sans", Arial;
  background: #CCC;
}

main {
  background: #EEE;
  width: 600px;
  margin: 20px auto;
  padding: 10px 0;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.3);
}

h2 {
  text-align: center;
}

p {
  font-size: 13px;
}

input {
  display: none;
  visibility: hidden;
}

label {
  display: block;
  padding: 0.5em;
  text-align: center;
  border-bottom: 1px solid #CCC;
  color: #666;
}

label:hover {
  color: #000;
}

label::before {
  font-family: Consolas, monaco, monospace;
  font-weight: bold;
  font-size: 15px;
  content: "+";
  vertical-align: text-top;
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-right: 3px;
  background: radial-gradient(ellipse at center, #CCC 50%, transparent 50%);
}

#expand {
  height: 0px;
  overflow: hidden;
  transition: height 0.5s;
  background: url(http://placekitten.com/g/600/300);
  color: #FFF;
}

section {
  padding: 0 20px;
}

#toggle:checked~#expand {
  height: 250px;
}

#toggle:checked~label::before {
  content: "-";
}

<main>
  <h2>CSS Expand/Collapse Section</h2>
  <input id="toggle" type="checkbox">
  <label for="toggle">Hidden Kitten</label>
  <div id="expand">
    <section>
      <p>mew</p>
    </section>
  </div>
  <section>
    <h3>Other content</h3>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas porta non turpis faucibus lobortis. Curabitur non eros rutrum, gravida felis non, luctus velit. Ut commodo congue velit feugiat lobortis. Etiam nec dolor quis nulla bibendum blandit
      vitae nec enim. Maecenas id dignissim erat. Aenean ac mi nec ante venenatis interdum quis vel lacus.
    </p>
    <p>Aliquam ligula est, aliquet et semper vitae, elementum eget dolor. In ut dui id leo tristique iaculis eget a dui. Vestibulum cursus, dolor sit amet lacinia feugiat, turpis odio auctor nisi, quis pretium dui elit at est. Pellentesque lacus risus, vulputate
      sed gravida eleifend, accumsan ac ante. Donec accumsan, augue eu congue condimentum, erat magna luctus diam, adipiscing bibendum sem sem non elit.</p>
  </section>
</main>

Answer 2

只需删除 input 中的 checked 即可。

它应该是这样的：

<input id="toggle" type="checkbox">

CSS collapse/expand

CSS collapse/expand

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