html {
  font-size: 18px;
  max-width: 100%;
}
body {
  font-weight: 300;
  margin: 0 auto;
  max-width: 48rem;
  line-height: 1.45;
  padding: .25rem;
  background-color: #f8f9fa;
}
body, h1, h2, h3, h4, h5, h6 {
  font-family: Helvetica, sans-serif;
}
h1, h2, h3 {
  border-bottom: 2px solid #fafafa;
  margin-bottom: 1.15rem;
  padding-bottom: .5rem;
  text-align: center;
}
blockquote {
  border-left: 8px solid #5c940d;
  padding: 1rem;
  background: #e9fac8;
}
code, pre {
  background-color: #fafafa;
  word-wrap: break-word;
}
a {
  text-decoration: none;
}
body {
  filter: invert(100%) hue-rotate(180deg);
  background: #000;
}
img,  video,  iframe  {
   filter:  invert(100%) hue-rotate(180deg);
}
}
@media only screen and (max-width: 480px)  {
   blockquote {width: 90%;}
}