hub/style.css

body {
  font: 100% -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  margin: 0;
}

a:link,
a:visited,
a:active {
  color: rgb(65, 131, 196);
  -webkit-transition: color .2s ease-out;
}

a:hover {
  color: rgb(35, 101, 166);
}

header {
  background: #ced0d8;
  float: left;
  width: 100%;
  text-align: center;
  padding: 2em 0;
}

h1 {
  font: 400 1.3em Futura, Lucida Grande, -apple-system, Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  color: white;
  text-shadow: rgba(0,0,0,.7) 1px 1px 2px;
  margin: .2em 0;
  line-height: 1.2;
  float: left;
  width: 90%;
}

h1 a {
  text-decoration: none;
  font-size: 4.5em;
  letter-spacing: -.1em;
  margin-right: .1em;
  position: relative;
  top: .1em;
  text-transform: none;
  -webkit-text-stroke: white 1px;
  text-shadow:
    #eee -1px -1px 0,
    #eee -2px -2px 0,
    #eee -3px -3px 0,
    #eee -4px -4px 0,
    rgba(65, 131, 196, .3) -5px -5px 0;
}

h1 a:hover {
  text-decoration: none;
}

footer {
  text-shadow: rgba(255,255,255,.8) 0 1px 0;
}

h2 {
  margin: 0;
  color: #444;
}
h3 {
  margin: 1.5em 0 0 0;
}

p code,
footer,
pre {
  font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace;
}

section {
  max-width: 100ex;
  clear: both;
  color: #444;
  padding: 1em;
  margin: 12px auto 0;
  line-height: 1.5;
}

section p {
  font-size: 1.1em;
}

section p em {
  font-style: normal;
  background: #fcf4c1;
  padding: 1px 4px;
  border-radius: 3px;
}


pre {
  margin: .5em 0 0 0;
  line-height: 1.5;
  background: #222;
  border-radius: 5px;
  padding: 1em 1.5em;
  color: white;
}
pre .p:before {
  content: "$ ";
}

pre .comment {
  color: #969896;
  line-height: 1.4;
  white-space: pre-wrap;
}

pre .comment .hidden {
  color: #222;
}

pre .result {
  color: #777;
  margin-left: 1em;
}

pre strong {
  color: #dada82;
  font-weight: 400;
}
pre .value {
  color:rgb(187, 169, 253);
}

footer {
  text-align: center;
  margin-top: 15px;
  color: gray;
}

@media only screen and (max-width: 768px) {
  body {
    width: auto;
    margin: 0;
    padding: 16px;
    padding-top: 0;
  }

  section {
    margin-top: 16px;
  }
}

@media only screen and (max-width: 480px) {
  body {
    padding: 6px;
    font-size: 14px;
  }

  h1 {
    margin-top: 0;
  }

  h1 {
    width: auto;
    text-align: center;
    float: none;
  }

  h1 a {
    display: block;
    margin: 0 auto;
  }

  section {
    margin-top: 6px;
    padding: .5em 8px;
    line-height: 1.3;
    overflow: hidden;
  }

  section h2 {
    font-size: 16px;
    margin-bottom: 0;
  }

  section p {
    font-size: 1em;
    line-height: 1.5;
  }

  section p em {
    padding: 0;
    border-radius: 0;
  }

  pre {
    font-size: 13px;
    line-height: 1.2;
    white-space: pre-wrap;
  }

  pre .comment {
    font-size: 1em;
  }

  pre .result {
    font-size: .9em;
    margin-left: 0;
  }
}