index.scss

html,
body {
  height: 100%;
  margin: 0;
}

body {
  align-items: center;
  display: flex;
  justify-content: center;

  background: linear-gradient(to bottom right, #444444, #009a5b);
  font-size: 1.5rem;
}

main {
  color: #fff6d5;
  font-family: sans-serif;
  text-align: left;
  padding-left: 80px;
  padding-right: 80px;
}

h1 + .subtitle {
  display: block;
  margin-top: -1em;
}

.heading {
  margin: 0 auto;

  width: 100%;
  font-size: 1.2rem;
}

.intro {
  margin: 0 auto;
  width: 100%;
  font-size: 1.2rem;

  align-items: left;
}
ul {
  padding-left: 100px;
}
li {
  padding-left: 10px;
}

.entry,
.readout {
  margin: 0 auto;
  padding: 8px;
  border: 1px solid black;
  background-color: rgba(0, 0, 0, 0.25);
}

.entry input {
  font-size: 1.5rem;
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.6);
  width: 100%;
  display: block;
  box-sizing: border-box;
  margin-top: 16px;
}

.readout {
  margin-top: 16px;
}

input:focus {
  outline: 0;
  border-color: #550096;
}

.footnote {
  font-size: 0.9rem;
  margin-top: 16px;
  padding-left: 0px;
}