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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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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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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                <div class="contact-1 py-4 md:py-12">
  <div class="container mx-auto px-4">
    <div class="xl:flex -mx-4">
      <div class="xl:w-10/12 xl:mx-auto px-4">

        <div class="xl:w-3/4 mb-4">
          <h1 class="text-3xl text-medium mb-4">We would love to hear from you</h1>
          <p class="text-xl mb-2">Please submit your information and we will get back to you.</p>
          <p>Call us at <a href="tel:+12314561231" class="text-indigo-600 border-b border-transparent hover:border-indigo-600 transition-colors duration-300">+1 231 456 1231</a></p>
        </div>

        <div class="md:flex md:-mx-4 mt-4 md:mt-10">

          <div class="md:w-2/3 md:px-4">
            <div class="contact-form">
              <div class="sm:flex sm:flex-wrap -mx-3">
                <div class="sm:w-1/2 px-3 mb-6">
                  <input type="text" placeholder="Full Name" class="border-2 rounded px-3 py-1 w-full focus:border-indigo-400 input">
                </div>
                <div class="sm:w-1/2 px-3 mb-6">
                  <input type="text" placeholder="Company Name" class="border-2 rounded px-3 py-1 w-full focus:border-indigo-400 input">
                </div>
                <div class="sm:w-1/2 px-3 mb-6">
                  <input type="text" placeholder="E-mail address" class="border-2 rounded px-3 py-1 w-full focus:border-indigo-400 input">
                </div>
                <div class="sm:w-1/2 px-3 mb-6">
                  <input type="text" placeholder="Phone Number" class="border-2 rounded px-3 py-1 w-full focus:border-indigo-400 input">
                </div>
                <div class="sm:w-full px-3">
                  <textarea name="message" id="message" cols="30" rows="4" placeholder="Your message here" class="border-2 rounded px-3 py-1 w-full focus:border-indigo-400 input"></textarea>
                </div>
              </div>
              <div class="text-right mt-4 md:mt-12">
                <button class="border-2 border-indigo-600 rounded px-6 py-2 text-indigo-600 hover:bg-indigo-600 hover:text-white transition-colors duration-300">
                  Send a Message
                  <i class="fas fa-chevron-right ml-2 text-sm"></i>
                </button>
              </div>
            </div>
          </div>

          <div class="md:w-1/3 md:px-4 mt-10 md:mt-0">
            <div class="bg-indigo-100 rounded py-4 px-6">
              <h5 class="text-xl font-medium mb-3">Help</h5>
              <p class="text-gray-700 mb-4">Need help or have any query? Don't hesitate, you can directly shoot us an <a href="mailto:" class="text-indigo-600 border-b border-transparent hover:border-indigo-600 inline-block">email</a> or call us at <a href="tel:" class="text-indigo-600 border-b border-transparent hover:border-indigo-600 inline-block">+1 231 456 1231</a></p>
              <p class="text-gray-700">You can move to <a href="#" class="text-indigo-600 border-b border-transparent hover:border-indigo-600 inline-block">FAQs</a> or <a href="#" class="text-indigo-600 border-b border-transparent hover:border-indigo-600 inline-block">Support</a> page to get more information about our site.</p>
            </div>
          </div>

        </div>

      </div>
    </div>

  </div>
</div>
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CSS 

              
                .input {
  transition: box-shadow 0.3s, border-color 0.3s;

  &:focus {
    box-shadow: 0 0 0 0.2rem rgba(88, 99, 248, 0.15);
  }
}
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JS
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999px

Console