不用JS，教你只用纯HTML做出几个实用网页效果

<details>
<summary>Languages Used</summary>
<p>This page was written in HTML and CSS. The CSS was compiled from SASS. Regardless, this could all be done in plain HTML and CSS</p>
</details>

<details>
<summary>How it Works</summary>
<p>Using the sibling and checked selectors, we can determine the styling of sibling elements based on the checked state of the checkbox input element. </p>
</details>

* {
    font-size: 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
details {
    border: 1px solid #aaa;
    border-radius: 4px;
    padding: .5em .5em 0;
}

summary {
    font-weight: bold;
    margin: -.5em -.5em 0;
    padding: .5em;
}

details[open] {
    padding: .5em;
}

details[open] summary {
    border-bottom: 1px solid #aaa;
    margin-bottom: .5em;
}

<label for="upload">Upload progress:</label>

<meter id="upload" name="upload"
       min="0" max="100"
       low="33" high="66" optimum="80"
       value="50">
    at 50/100
</meter>

<hr/>

<label for="file">File progress:</label>

<progress id="file" max="100" value="70"> 70% </progress>

body {
  margin: 50px;
}

label {
    padding-right: 10px;
    font-size: 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

<label for="date">Enter date:</label>
<input type="date" id="date"/>

<label for="datetime">Enter date & time:</label>
<input type="datetime-local" id="datetime"/>

<label for="month">Enter month:</label>
<input type="month" id="month"/>

<label for="search">Search for:</label>
<input type="search" id="search"/>

<label for="tel">Enter Phone:</label>
<input type="tel" id="tel">

input, label {display:block; margin: 5px;}
input {margin-bottom:18px;}

<video controls>

    <source src="https://addpipe.com/sample_vid/short.mp4" 
            poster="https://addpipe.com/sample_vid/poster.png">

    Sorry, your browser doesn't support embedded videos.
</video

<blockquote>
    There is <del>nothing</del> <ins>no code</ins> either good or bad, but <del>thinking</del> <ins>running it</ins> makes it so.
</blockquote>

del {
    text-decoration: line-through;
    background-color: #fbb;
    color: #555;
}

ins {
    text-decoration: none;
    background-color: #d4fcbc;
}

blockquote {
    padding-left: 15px;
    line-height: 30px;
    border-left: 3px solid #d7d7db;
    font-size: 1rem;
    background: #eee;
    width: 200px;
}

Don Corleone said <q cite="https://www.imdb.com/title/tt0068646/quotes/qt0361877">I'm gonna make him an offer he can't refuse. Okay? I want you to leave it all to me. Go on, go back to the party.</q></p>


<hr/>

Don Corleone said <i>"I'm gonna make him an offer he can't refuse. Okay? I want you to leave it all to me. Go on, go back to the party."</i>

body {
  margin: 50px;
}

q {
    font-style: italic;
    color: #000000bf;
}

<p>I know that <kbd>CTRL</kbd>+<kbd>C</kbd> and <kbd>CTRL</kbd>+<kbd>V</kbd> a are like the most used key combinations</p>

body {
  margin: 50px;
}

kbd {
    display: inline-block;
    margin: 0 .1em;
    padding: .1em .6em;
    font-size: 11px;
    line-height: 1.4;
    color: #242729;
    text-shadow: 0 1px 0 #FFF;
    background-color: #e1e3e5;
    border: 1px solid #adb3b9;
    border-radius: 3px;
    box-shadow: 0 1px 0 rgba(12,13,14,0.2), 0 0 0 2px #FFF inset;
    white-space: nowrap;
}

<figure>
  <figcaption>
      Defining a css <code>color</code> property for a class called 'golden'
  </figcaption>
  
  <pre>
    <code>
      .golden {
        color: golden;
      }
    </code>
  </pre>
</figure>

pre {
  background-color: #ffbdbd;
}