body {
  
  position: relative;
}

.intro-copy {
  padding: 1em;
  margin: 50vh auto;
  max-width: 15em;
  
  font-weight: lighter;
  font-size: 2em;
  line-height: 1.2;
  text-align: center;
}

.top-link {
  transition: all .25s ease-in-out;
  position: fixed;
  bottom: 0;
  right: 0;
  display: inline-flex;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  margin: 0 3em 3em 0;
  border-radius: 50%;
  padding: .25em;
  width: 60px;
  height: 60px;
  background-color: rgba(223,223,223,0.7);
}
.top-link.show {
  visibility: visible;
  opacity: 1;
}
.top-link.hide {
  visibility: hidden;
  opacity: 0;
}
.top-link svg {
  fill: #000;
  width: 24px;
  height: 12px;
}
.top-link:hover {
  background-color: #E8E8E8;
}
.top-link:hover svg {
  fill: #000000;
}

.screen-reader-text {
  position: absolute;
  clip-path: inset(50%);
  margin: -1px;
  border: 0;
  padding: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  word-wrap: normal !important;
  clip: rect(1px, 1px, 1px, 1px);
}
.screen-reader-text:focus {
  display: block;
  top: 5px;
  left: 5px;
  z-index: 100000;
  clip-path: none;
  background-color: #eee;
  padding: 15px 23px 14px;
  width: auto;
  height: auto;
  text-decoration: none;
  line-height: normal;
  color: #444;
  font-size: 1em;
  clip: auto !important;
}