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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).

Add External Stylesheets/Pens

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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

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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 

              
                <div class="container">
  <div class="america">
    <div class="america-blue">
      <div class="star-row">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
      </div>
      <div class="star-row-5">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
       
      </div>
      <div class="star-row">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
      </div>
      <div class="star-row-5">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
       
      </div>
      <div class="star-row">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
      </div>
      <div class="star-row-5">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
       
      </div>
      <div class="star-row">
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
        <svg class="star">
          <use xlink:href="#star"></use>
        </svg>
      </div>
    </div>
    <div class="stripes">
      <div class="stripe"></div>
      <div class="stripe"></div>
      <div class="stripe"></div>
      <div class="stripe"></div>
      <div class="stripe"></div>
      <div class="stripe"></div>
    </div>
  </div>
</div>
<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0"  fill="white" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" >
    <defs>
    <symbol id="star" fill="white" viewBox="0 0 250 250">
       <path d="m55,237 74-228 74,228L9,96h240"/>
     </symbol>
    </defs>
 </svg>
!

CSS 

              
                body {
  padding: 0;
  overflow: hidden;
  background: linear-gradient(90deg, #041E42 20%, #9b1c2c 100%);
}
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;

}
.america {
  width: 900px;
  min-width: 900px;
  height: 450px;
  background: #BF0A30;
  position: relative;
  box-shadow: 0px 20px 80px 10px rgba(0,0,0,.25);
}
.america-blue {
  position: absolute;
  top: 0;
  left: 0;
  width: 378px;
  height: calc((450px / 13) * 7);
  background-color: #002868;
  z-index: 1;
  padding: 13px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.stripe {
  background-color: white;
  width: 100%;
  height: calc(450px / 13);
}

.stripe:nth-child(1) {
  animation: 1000ms ease 0ms forwards animateDown;
}
.stripe:nth-child(2) {
  animation: 1200ms ease-in-out 0ms forwards animateDown;
}
.stripe:nth-child(3) {
  animation: 1400ms ease-in-out 0ms forwards animateDown;
}
.stripe:nth-child(4) {
  animation: 1600ms ease-in-out 0ms forwards animateDown;
}
.stripe:nth-child(5) {
  animation: 1800ms ease-in-out 0ms forwards animateDown;
}
.stripe:nth-child(6) {
  animation: 2000ms ease-in-out 0ms forwards animateDown;
}

@keyframes animateDown {
  0% {
    margin-top: 0;
  }
  100% {
    margin-top: calc(450px / 13);
  }
}

.star {
  height: 24px;
  width: 24px;
}
.star-row {
  display: flex;
  justify-content: space-between;
}

.star-row:nth-child(1) .star {
  animation: 1000ms ease-in-out 0ms forwards spinMove;
}

.star-row:nth-child(3) .star {
  animation: 1400ms ease-in-out 0ms forwards spinMove;
}

.star-row:nth-child(5) .star {
  animation: 1800ms ease-in-out 0ms forwards spinMove;
}

.star-row:nth-child(7) .star {
  animation: 2000ms ease-in-out 0ms forwards spinMove;
}

.star-row .star:nth-child(6) {
  margin-right: 0;
  animation: 1000ms ease-in-out spin;
}

.star-row-5 {
  display: flex;
  justify-content: space-between;
  padding: 8px 27px;
}

.star-row-5:nth-child(2) .star {
  animation: 1200ms ease-in-out 0ms forwards spinMove;
}
.star-row-5:nth-child(4) .star {
  animation: 1400ms ease-in-out 0ms forwards spinMove;
}
.star-row-5:nth-child(6) .star {
  animation: 1600ms ease-in-out 0ms forwards spinMove;
}
.star-row-5 .star:nth-child(5) {
  margin-right: 0;
  animation: 800ms ease-in-out forwards spin;
}

@keyframes spinMove {
  0% {
    transform: rotate(0deg)
  }
  100% {
    transform: rotate(360deg)
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg)
  }
  100% {
    transform: rotate(360deg)
  }
}


@media (max-width: 1000px) {
  .america {
    transform: scale(.75);
  }
}
@media (max-width: 725px) {
  .america {
    transform: scale(.5);
  }
}
@media (max-width: 475px) {
  .america {
    transform: scale(.375);
  }
}

@media (max-width: 340px) {
  .america {
    transform: scale(.325);
  }
}
!

JS
!
999px

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