html - CSS 折叠/展开

Question

我有一个纯 CSS CSS 展开/折叠 div，它基于其他人的代码 @ here默认情况下，隐藏文本是可折叠的，但如果文本在单击后展开会更好。

有人对如何编辑此代码以便在最小化点击之前最小化文本有任何建议吗？如果避免使用 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。

改变:

<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>