html {
  background: #4e4e4e;
  color: #ddd;
  font: 16px/1.4 Open Sans, Helvetica, Arial, sans-serif;
}

body {
  max-width: 720px;
  padding: 20px 40px;
  margin: 0 auto;
}

a {
  color: #5db1bd;
  text-decoration: none;
}

a:hover,
a:focus,
a:active {
  text-decoration: underline;
}

h1,
h2 {
  line-height: 1.2;
  font-family: 'Source Sans Pro', sans-serif;
}

p {
  margin: 1em 0;
}

/* structure */

.site-box {
  padding: 40px 60px 0;
  margin: 0 0 3em;
  background: #333333;
  text-align: center;
}

.site-footer {
  width: 85%;
  margin: 0 auto;
}

.site-footer p {
  width: 100%;
  text-align: center;
}

.logo {
  width: 10rem;
}

.title {
  margin-bottom: 40px;
  font-size: 2.6em;
}

.tagline {
  margin: 0 0 0.75em;
  font-size: 1.50em;
}

.cta-button {
  margin: 2em auto auto 1em;
}

.cta-button:hover,
.cta-button:active {
  filter: brightness(1.3);
}

/**
 * Share bar
 */

.share-bar {
  overflow: hidden;
  padding: 15px 30px;
  border-top: 1px solid #777;
  margin: 50px -60px 0;
  background: #060709;
  line-height: 28px;
  *zoom: 1;
}

.share-opt {
  float: left;
  height: 28px;
  margin: 0 15px 0 0;
}

.read-more {
  float: right;
}

/**
 * Utilities
 */

.txt-small {
  font-size: 0.75em;
}

.txt-large {
  font-size: 1.25em;
}

.txt-mute {
  color: #999;
}

@media screen and (max-width: 700px) {
  .read-more {
    float: none;
    display: block;
    margin: 0 0 1em;
    line-height: 1.2;
  }
}

@media screen and (max-width: 540px) {
  body {
    padding: 20px;
    font-size: 0.875em;
  }

  .site-box {
    padding: 30px 30px 0;
  }

  .share-bar {
    margin-left: -30px;
    margin-right: -30px;
    text-align: center;
  }

  .share-opt {
    float: none;
    display: inline-block;
    margin: 0 1em 0.5em;
  }
}