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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

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About the <head>

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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-.

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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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HTML 

              
                <body>
<header>
  <div class="container">
    <h3>Section Heading</h3>
    <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Neque asperiores voluptatum eveniet, nemo, dolorem possimus aperiam porro illo reprehenderit, tempore id consequatur impedit necessitatibus doloribus nam voluptatem. Vel cupiditate veritatis neque sed nihil et impedit.       </p>
  </div>
</header>
  
  <!-- series of spans that fade in to next section -->
  <span></span>
  <span></span>
  <span></span>
  <span></span>

<section id="section1">
  <div class="container">
  <h3>Section Heading</h3>
  <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Voluptate beatae officia officiis alias totam maiores magni recusandae omnis autem possimus aliquid asperiores, nostrum neque culpa et, soluta, ratione quasi voluptatibus illum vero quas eum! Animi praesentium voluptatem temporibus. Error qui sapiente nobis excepturi quae provident.</p>
  </div>
</section>

  <!-- this section is slanted using the 'skew' attribute -->
<section id="section2">
  <div class="container">
  <h3>Section Heading</h3>
  <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Voluptate beatae officia officiis alias totam maiores magni recusandae omnis autem possimus aliquid asperiores, nostrum neque culpa et, soluta, ratione quasi voluptatibus illum vero quas eum! Animi praesentium voluptatem temporibus. Error qui sapiente nobis excepturi quae provident.</p>
  </div>
</section>

<section id="section3">
    <div class="container">
      <h3>Section Heading</h3>
  <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Voluptate beatae officia officiis alias totam maiores magni recusandae omnis autem possimus aliquid asperiores, nostrum neque culpa et, soluta, ratione quasi voluptatibus illum vero quas eum! Animi praesentium voluptatem temporibus. Error qui sapiente nobis excepturi quae provident.</p>
    </div>
</section>
  
    <!-- Chevron pattern SVG -->
  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 377.74 55.15">
  <defs>
    <style>
      .cls-1 {
        fill: #d1d5db;
      }

      .cls-2 {
        fill: #374151;
      }

      .cls-3 {
        fill: #111827;
      }
    </style>
  </defs>
  <g id="Layer_2" data-name="Layer 2">
    <g id="Layer_1-2" data-name="Layer 1">
      <polygon class="cls-1" points="360.74 16.47 368.74 0.47 376.74 16.47 368.74 33.47 360.74 16.47"/>
      <g>
        <polygon class="cls-1" points="0 16 8 0 16 16 8 33 0 16"/>
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      <g>
        <polygon class="cls-2" points="8.32 28.29 16.32 12.29 24.32 28.29 16.32 45.29 8.32 28.29"/>
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        <polygon class="cls-2" points="40.79 28.44 48.79 12.44 56.79 28.44 48.79 45.44 40.79 28.44"/>
        <polygon class="cls-2" points="57.79 28.44 65.79 12.44 73.79 28.44 65.79 45.44 57.79 28.44"/>
        <polygon class="cls-2" points="74.32 28.29 82.32 12.29 90.32 28.29 82.32 45.29 74.32 28.29"/>
        <polygon class="cls-2" points="90.79 28.44 98.79 12.44 106.79 28.44 98.79 45.44 90.79 28.44"/>
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      <polygon class="cls-3" points="361.74 37.47 369.74 21.47 377.74 37.47 369.74 54.47 361.74 37.47"/>
    </g>
  </g>
</svg>
  
<section id="section4">
    <div class="container">
      <h3>Section Heading</h3>
  <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Voluptate beatae officia officiis alias totam maiores magni recusandae omnis autem possimus aliquid asperiores, nostrum neque culpa et, soluta, ratione quasi voluptatibus illum vero quas eum! Animi praesentium voluptatem temporibus. Error qui sapiente nobis excepturi quae provident.</p>
    </div>
</section>

<!-- Wavy SVG applied to footer-bg -->
<div class="footer-bg"></div>
<footer>
  <small>This is some footer text. </small>
</footer>
</body>
!

CSS 

              
                * {
    margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  width: 100%;
  overflow: auto;
}

h3 {
  margin-bottom: 2rem;
}

header {
  line-height: 1.75;
  height: 100%;
  background-color: #DC2626;
  color: #f8f8f8;
}

.container {
  width: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  line-height: 1.5;
  margin: 0 auto;
  padding: 5%;
}


/* Series of <span>'s with colors that fade out */
span {
  height: 18px;
  width: 100%;
}

span:nth-of-type(1) {
  background-color: #F87171;
  box-shadow: 0 0 12px 2px #F87171; /* adds blur to smooth color transitions */
  margin-top: -2px; /* layers it on top of the previous <span> */
}

span:nth-of-type(2) {
  opacity: .8;
  background-color: #FECACA;
  box-shadow: 0 0 12px 2px #FECACA;
  margin-top: -2px;
}

span:nth-of-type(3) {
  opacity: .6;
  background-color: #FEF2F2;
  box-shadow: inset 0 0 12px 2px #FEF2F2;
  margin-top: -2px;
}

section {
  overflow: hidden;
  height: 100%;
}

#section1 {
  background-color: #fff;
}

#section2 {
    background-color: #F59E0B;
    padding: 5%; 
    transform: skew(0, -2deg); /* makes the section slanted/skewed */
}

#section2 h3, #section2 p {
  transform: skew(0, 2deg); /* eliminates skew on container's text elements */
}

#section3 {
  background-color: #1F2937;
  height: 100%;
  color: #f2f2f2;
  margin-top: -5%;
  padding-top: 8%;
  padding-bottom: 8%;
  overflow: hidden;
}

svg {
  overflow: hidden;
  margin-top: -4rem;
  margin-left: -1rem;
  z-index: 1000;
}

#section4 {
  background-color:  #F9FAFB;
  margin-top: -10%;
  padding-top: 10%;
  padding-bottom: 12%;
}

/* Wavy background for footer */
.footer-bg {
  background-color: #7F1D1D;
  position: relative;
  margin-top: -18%; 
  overflow: hidden;
  z-index: 100;
  height: 300px;
  clip-path: polygon(0% 65%, 1% 64.95%, 2% 64.8%, 3% 64.6%, 4% 64.3%, 5% 63.9%, 6% 63.45%, 7% 62.9%, 8% 62.25%, 9% 61.55%, 10% 60.8%, 11% 59.95%, 12% 59.05%, 13% 58.1%, 14% 57.1%, 15% 56.05%, 16% 55%, 17% 53.9%, 18% 52.8%, 19% 51.65%, 20% 50.5%, 21% 49.35%, 22% 48.2%, 23% 47.05%, 24% 45.9%, 25% 44.8%, 26% 43.75%, 27% 42.75%, 28% 41.75%, 29% 40.8%, 30% 39.9%, 31% 39.1%, 32% 38.35%, 33% 37.65%, 34% 37.05%, 35% 36.5%, 36% 36.05%, 37% 35.65%, 38% 35.35%, 39% 35.15%, 40% 35.05%, 41% 35%, 42% 35.05%, 43% 35.2%, 44% 35.45%, 45% 35.75%, 46% 36.15%, 47% 36.65%, 48% 37.2%, 49% 37.85%, 50% 38.55%, 51% 39.35%, 52% 40.2%, 53% 41.1%, 54% 42.05%, 55% 43.05%, 56% 44.1%, 57% 45.15%, 58% 46.3%, 59% 47.4%, 60% 48.55%, 61% 49.7%, 62% 50.85%, 63% 52%, 64% 53.15%, 65% 54.25%, 66% 55.35%, 67% 56.4%, 68% 57.45%, 69% 58.4%, 70% 59.35%, 71% 60.2%, 72% 61.05%, 73% 61.8%, 74% 62.45%, 75% 63.05%, 76% 63.6%, 77% 64.05%, 78% 64.4%, 79% 64.7%, 80% 64.85%, 81% 65%, 82% 65%, 83% 64.9%, 84% 64.75%, 85% 64.5%, 86% 64.2%, 87% 63.75%, 88% 63.25%, 89% 62.7%, 90% 62.05%, 91% 61.3%, 92% 60.5%, 93% 59.65%, 94% 58.75%, 95% 57.8%, 96% 56.8%, 97% 55.75%, 98% 54.65%, 99% 53.55%, 100% 52.4%, 100% 100%, 0% 100%);
}

footer {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  line-height: 1.5;
  height: 200px;
  margin-top: -5px;
  background-color: #7F1D1D;
  color: #fff;
}

@media screen and (max-width: 1024px) {
  .container {
    width: 90vw;
    padding: 5% 5px;
  }
  
  header, section {
    height: 100%;
  }
  
  header .container {
    float: none;
    text-align: center;
    padding: 5% 5px;
  }
  
  #section2 {
    padding: 0 5px;
  }
  
  #section3 {
    margin-top: -8%;
    padding-bottom: 20%;
  }
  
  #section4 {
    padding-bottom: 20%;
  }
  
  .footer-bg {
    height: 200px;
    margin-top: -30%;
  }
}

@media screen and (max-width: 400px) {
    .footer-bg {
    margin-top: -35%;
  }
}
!

JS
!
999px

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