main.css

/* Thanks to Robin Metcalfe: https://codepen.io/solarisedesign/pen/NqJwxG */

html {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-size: 12px;
  font-family: "Arvo", sans-serif;
}

*, *::after, *::before {
  box-sizing: inherit;
}

.quotes {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  flex-direction: column;
  height: inherit;
}

@media screen and (max-width: 960px) {
  .quotes {
    -webkit-box-orient: vertical;
    -moz-box-orient: vertical;
    box-orient: vertical;
    -webkit-box-direction: normal;
    -moz-box-direction: normal;
    box-direction: normal;
    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    flex-direction: column;
    -ms-flex-direction: column;
  }
}

blockquote {
  padding: 0.5em 1em 0.5em 1em;
  position: relative;
  height: 100vh;
  flex: 1;
  flex-basis: inherit;
  font-size: 1.4em;
  overflow: hidden;
  width: 100%;
  margin: 0;
  display: none;
}

blockquote p {
  font-size: 3.5em;
  text-indent: 0em;
  margin: 0em 0 0.25em 0;
  line-height: 1.25em;
  z-index: 1;
}

blockquote p::before {
  font-family: Georgia;
  content: "\201C";
  font-size: 5em;
  position: relative;
  left: 0em;
  top: 0.45em;
  color: #999;
}

blockquote footer::before {
  content: "\002D\0009";
  font-style: italic;
}

blockquote p::after {
  font-family: Georgia;
  content: "\201D";
  font-size: 16em;
  position: absolute;
  right: -0.085em;
  bottom: -0.25em;
  z-index: -1;
  color: #eee;
}

blockquote footer {
  font-size: 2em;
  line-height: 2.5em;
  font-style: italic;
  text-indent: 1em;
}