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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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You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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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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About Packages

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 

              
                <section class="flex flex-col md:flex-row h-screen items-center">

  <div class="bg-blue-600 hidden lg:block w-full md:w-1/2 xl:w-2/3 h-screen">
    <img src="https://images.unsplash.com/photo-1444313431167-e7921088a9d3?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1441&q=100" alt="" class="w-full h-full object-cover">
  </div>

  <div class="bg-white w-full md:max-w-md lg:max-w-full md:mx-auto md:mx-0 md:w-1/2 xl:w-1/3 h-screen px-6 lg:px-16 xl:px-12
        flex items-center justify-center">

    <div class="w-full h-100">

      <h1 class="text-xl font-bold">Abstract UI</h1>

      <h1 class="text-xl md:text-2xl font-bold leading-tight mt-12">Log in to your account</h1>

      <form class="mt-6" action="#" method="POST">
        <div>
          <label class="block text-gray-700">Email Address</label>
          <input type="email" name="" id="" placeholder="Enter Email Address" class="w-full px-4 py-3 rounded-lg bg-gray-200 mt-2 border focus:border-blue-500 focus:bg-white focus:outline-none" autofocus autocomplete required>
        </div>

        <div class="mt-4">
          <label class="block text-gray-700">Password</label>
          <input type="password" name="" id="" placeholder="Enter Password" minlength="6" class="w-full px-4 py-3 rounded-lg bg-gray-200 mt-2 border focus:border-blue-500
                focus:bg-white focus:outline-none" required>
        </div>

        <div class="text-right mt-2">
          <a href="#" class="text-sm font-semibold text-gray-700 hover:text-blue-700 focus:text-blue-700">Forgot Password?</a>
        </div>

        <button type="submit" class="w-full block bg-blue-500 hover:bg-blue-400 focus:bg-blue-400 text-white font-semibold rounded-lg
              px-4 py-3 mt-6">Log In</button>
      </form>

      <hr class="my-6 border-gray-300 w-full">

      <button type="button" class="w-full block bg-white hover:bg-gray-100 focus:bg-gray-100 text-gray-900 font-semibold rounded-lg px-4 py-3 border border-gray-300">
            <div class="flex items-center justify-center">
            <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" class="w-6 h-6" viewBox="0 0 48 48"><defs><path id="a" d="M44.5 20H24v8.5h11.8C34.7 33.9 30.1 37 24 37c-7.2 0-13-5.8-13-13s5.8-13 13-13c3.1 0 5.9 1.1 8.1 2.9l6.4-6.4C34.6 4.1 29.6 2 24 2 11.8 2 2 11.8 2 24s9.8 22 22 22c11 0 21-8 21-22 0-1.3-.2-2.7-.5-4z"/></defs><clipPath id="b"><use xlink:href="#a" overflow="visible"/></clipPath><path clip-path="url(#b)" fill="#FBBC05" d="M0 37V11l17 13z"/><path clip-path="url(#b)" fill="#EA4335" d="M0 11l17 13 7-6.1L48 14V0H0z"/><path clip-path="url(#b)" fill="#34A853" d="M0 37l30-23 7.9 1L48 0v48H0z"/><path clip-path="url(#b)" fill="#4285F4" d="M48 48L17 24l-4-3 35-10z"/></svg>
            <span class="ml-4">
            Log in
            with
            Google</span>
            </div>
          </button>

      <p class="mt-8">Need an account? <a href="#" class="text-blue-500 hover:text-blue-700 font-semibold">Create an
              account</a></p>

      <p class="text-sm text-gray-500 mt-12">&copy; 2020 Abstract UI - All Rights Reserved.</p>
    </div>
  </div>

</section>
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