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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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HTML 

              
                <!-- Read the full post at https://jen4web.substack.com/p/caption -->
 
<h1>Challenge for < caption> and < th></h1>

<p>INSTRUCTIONS: Fork this CodePen and markup the content below.</p>
  <p>This is a similar challenge to yesterday's, but this time we've rearranged the text to group information by day. Can you create a table that shows the schedule grouped by day AND by time, with appropriate descriptive caption and hadings?</p>
 
  <p>Have a peek at <a href="https://codepen.io/jen4web/pen/ZELVjdR?editors=1100" target="_blank">today's CodePen demo</a> for some hints about how we thought about a similar problem.</p>

<p><a href="https://jen4web.substack.com/p/caption-discussion" target="_blank" class="button">Share your answer on Substack</a></p>
<hr> <!-- hr: a thematic break in a section. See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/hr -->
  <h2>Schedule Grouped by Day</h2>
  <table class="example-1">
  <caption>Course schedule</caption>
<tr><td></td>
    <th scope="col">9:25am-10:45am</th>
    <th scope="col">11am - 12:30pm</th>
    <th scope="col">1:10pm - 2:30pm</th>
    </tr>
    <tr><th scope="row">Monday</th>
    <td>I360 Web Design</td>
    <td rowspan=5>Lunch / Study</td>
  <td>I341 Prototyping with Arduino Tools</td>
</tr>
    <tr><th scope="row">Tuesday</th>
    <td>I342 Mobile Programming</td>
      <td>I399 JavaScript</td>
    </tr>
      <tr><th scope="row">Wednesday</th>
    <td>I360 Web Design</td>
    <td>I341 Prototyping with Arduino Tools</td>
    </tr>
    <tr><th scope="row">Thursday</th>
    <td>I342 Mobile Programming</td>
    <td>I399 JavaScript</td>
</tr>
      <tr><th scope="row">Friday</th>
    <td>Makers Lab</td>
      <td></td>
    </tr>
    
    </table>
<hr>
  
  <h2>Schedule Grouped by Time</h2>
<table class="example-2">
  <caption>Course schedule</caption>
    <tr>
    <td></td>
    <th scope="col">Monday</th>
    <th scope="col">Tuesday</th>
    <th scope="col">Wednesday</th>
    <th scope="col">Thursday</th>
    <th scope="col">Friday</th>
  <tr>
    <tr>
      <th scope="row">9:25am&nbsp;-&nbsp;10:45am</th>
      <td>I360 Web Design</td>
      <td>I342 Mobile Programming</td>
      <td>I360 Web Design</td>
       <td>I342 Mobile Programming</td>
      <td>Makers Lab</td>
  </tr>
  <tr>
      <th scope="row">115am - 12:30pm</th>
    <td colspan=5>Lunch / Study</td>
  </tr>
     <tr>
        <th scope="row">1:10pm - 2:30pm</th>
       <td>I341 Prototyping with Arduino Tools</td>
       <td>I399 JavaScript</td>
       <td>I341 Prototyping with Arduino Tools</td>
       <td>I399 JavaScript</td>
       <td></td>
  </tr>

  </table>
!

CSS 

              
                /* default styling - you don't need to touch this unless you really want to */
body {
  font-family: Arial, sans-serif;
  font-size: 1.2rem;
}
.button {
  background-color: #eb3b5a;
  padding: 0.5rem 1rem;
  border: 1px solid #eb3b5a;
  border-radius: 30px;
  color: white;
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
  margin-bottom: 5rem;
}
.button:hover {
  color: #eb3b5a;
  background-color: white;
}
table {
  border-collapse: collapse;
}
td, th {
  border: 1px solid black;
  padding: 0.5em;
  text-align: center;
}

th[scope="col"] {
    background-color: #696969;
    color: #fff;
}
th[scope="row"] {
    background-color: #d7d9f2;
}

caption {
  text-align: left;
  margin-top: 2rem;
  font-weight: bold;
}
.example-1 caption {
  caption-side: bottom;
  margin-top: 0;
  border: 1px solid black;
  border-top: none;
  padding: 0.5rem;
  background-color: #8854d0;
  color: white;
}

.example-1 tr:first-child td:first-child {
  /* first cell in the first row... */
  background-color: black;
}

.example-2 tr:nth-child(even) {
  /* for even number rows... 
  Remember the first row counts, even though it's got th instead of td */
  background-color: #d1d8e0;
}
.example-2 tr:first-child td:first-child {
  /* first cell in the first row... */
  background-color: #8854d0;
}
.example-2 caption {
  caption-side: bottom;
  margin-top: 0;
  border: 1px solid black;
  border-top: none;
  padding: 0.5rem;
  background-color: #339966;
  color: white;
}
!

JS 

              
                /* 

💯 This challenge is certified 100% free of JavaScript. 

ALL THE GOOD STUFF IS IN THE HTML BLOCK :-D

*/
!
999px

Console