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HTML

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Adding Classes

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About the <head>

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CSS

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CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                # [Kumquats Happy To Say “Baggy Pants”][1]

## [Dialogue][1] From Hamlet

### [Night (Not Day)][1]

Well, [good night][1].

Bernardo has my place.  
Give [you *good night*][1].

You come most [carefully upon your][1] hour.

[Have you][1] had [quiet guard][1]?

What, has this [thing appear’d][1] again *[to-night][1]?*

Sit down awhile;  
And let us [once again][1] assail your ears,  
That are so fortified [against our story][1]  
What we have **[two nights][1]** seen.

To be, or not to be: that is *[the question:][1]*  
Whether ’tis nobler in the mind to suffer  
The [slings][1] and arrows of [outrageous fortune][1],  
Or to [take arms against][1] a sea of troubles,  
And [by opposing][1] end them? To die: to sleep;  
No more; and by a [**sleep** to say][1] we end  
The heart-ache and the thousand natural shocks  
That flesh is heir to, ’tis a consummation  
[Devoutly][1] to be wish’d.

<button class="toggle-underline-class">Enable custom text underline</button>
<button class="toggle-font-family">Switch to sans-serif font</button>

[1]: http://shakespeare.mit.edu/hamlet/full.html
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CSS 

              
                // Colors
$color-accent     : rgb(141, 179, 89);
$color-text-body  : rgb(87, 83, 74);
$color-text-light : rgb(184, 186, 188);
$color-ui-light   : lighten($color-text-light, 14%);
// Font stacks
$font-sans-serif  : "Helvetica Neue", Helvetica, sans-serif;
$font-serif       : Georgia, serif;

// Set up basic typography
body {
  // 16px * 106.25% = 17px
  font-size: 106.25%;
  color: $color-text-body;
  font-family: $font-serif;
  font-weight: 400;
  padding: 0 1.5em 1.5em;
  &.is-sans-serif {
    font-family: $font-sans-serif;
  }
}
a {
  color: $color-accent;
}

// Custom link underline
// ---------------------
.has-custom-underline {
  a {
    color: $color-accent;
    text-decoration: none;
    // Underline via gradient background
    background-image: linear-gradient(rgba($color-accent, 0.25) 0%, $color-accent 100%);
    background-repeat: repeat-x; 
    background-size: 1px 1px;
    background-position: 0 95%;
    // Tweak position + thickness for high res (1.75x and up) displays
    @media (-webkit-min-device-pixel-ratio: 1.75), 
           (min-resolution: 168dpi) {
      background-image: linear-gradient(rgba($color-accent, 0.25) 0%, $color-accent 100%);
      background-position: 0 93%;
    }
    // Clear descendors from underline
    text-shadow: 3px 0 white, 2px 0 white, 1px 0 white, -1px 0 white, -2px 0 white, -3px 0 white;
    &:hover {
      color: darken($color-accent, 11%);
      background-image: linear-gradient(to bottom, darken($color-accent, 6%) 0%, darken($color-accent, 6%) 100%);
    }
    // Style selected links (or else text-shadow makes it look crazy ugly)
    // Pseudo selectors must go separately, or they break each other
    &,
    > * {
      &::selection {
        background-color: lighten($color-accent, 25%);
        color: $color-text-body;
        text-shadow: none;
      }
      &::-moz-selection {
        background-color: lighten($color-accent, 25%);
        color: $color-text-body;
        text-shadow: none;
      }
    }
  }
  h1, h2, h3 {
    a {
      background-size: 1px 2px;
      @media (-webkit-min-device-pixel-ratio: 1.75), 
             (min-resolution: 168dpi) {
        background-position: 0 93%;
        background-image: linear-gradient($color-accent 0%, $color-accent 100%);
        background-size: 1px 1px;
        background-position: 0 93%;
      }
    }
  }
}

// Toggle buttons
// --------------
button {
  position: fixed;
  right: 1.5em;
  background: $color-ui-light;
  border: 0;
  padding: 0.25em 0.75em;
  color: $color-text-body;
  font-family: $font-sans-serif;
  font-size: 0.94em;
}
.toggle-underline-class {
  top: 5em;
  @media (min-width: 975px) {
    top: 2em;
  }
}
.toggle-font-family {
  top: 7.5em;
  @media (min-width: 975px) {
    top: 4.5em;
  }
}
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JS 

              
                (function(body) {
  var underline_class   = ' has-custom-underline',
      font_family_class = ' is-sans-serif';
  document.getElementsByClassName('toggle-underline-class')[0].addEventListener('click', function() {
    if (body.className.indexOf(underline_class) > -1) {
      body.className = body.className.replace(underline_class, '');
      this.innerHTML = this.innerHTML.replace('Disable', 'Enable');
    } else {
      body.className += underline_class;
      this.innerHTML = this.innerHTML.replace('Enable', 'Disable');
    }
  });
  document.getElementsByClassName('toggle-font-family')[0].addEventListener('click', function() {
    if (body.className.indexOf(font_family_class) > -1) {
      body.className = body.className.replace(font_family_class, '');
      this.innerHTML = this.innerHTML.replace('serif', 'sans-serif');
    } else {
      body.className += font_family_class;
      this.innerHTML = this.innerHTML.replace('sans-serif', 'serif');
    }
  });
})(document.body);
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999px

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