body {
  line-height: 1.5em;
  background-color: white;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.upper {
    text-transform: capitalize;
}

.center {
    text-align: center;
}