styles.css

* {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  background: #fff;
  color: #000;
  margin: 1rem;
  line-height: 1.4;
}

h1, h2, h3, b {
  font-weight: 600;
  color: #000;
}

h1 {
  font-size: 2.5em;
  margin-top: 2em;
  text-align: center;
  font-weight: 500;
}

h2 {
  margin-bottom: 2rem;
}

h3 {
  margin: 0;
  font-size: 1.5em;
}

ul {
  padding: 0;
  margin-top: 2em;
  list-style-type: none;
}

li {
  padding: 1.5rem 2rem;
  position: relative;
  background: hsl(199, 100%, 68%);
}

li + li {
  margin-top: 1em;
}

section {
  max-width: 720px;
  margin: 2em auto;
}

input.search {
  display: block;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.2rem;
  padding: .75rem 1.5rem;
  border: 1px solid #444;
}

.smallprint {
  font-size: .9em;
  color: #000;
  text-align: center;
  margin-top: .8em;
}

.legacy {
  font-size: .9em;
  color: #000;
}

.legacy b {
  color: #000;
}

.alternative {  
  margin-top: 1.5em;
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-gap: 2rem;
}

.byline {
  font-size: .9em;
  margin-top: .7rem;
  color: #000;
}

.icon {
  width: 48px;
  height: 48px;
  align-self: top;
}

a.button {
  display: block;
  border: none;
  border-radius: 3px;
  color: #fff;
  font-size: 1em;
  line-height: 1.5;
  padding: .5em 1.2em .52em;
  position: relative;
  text-decoration: none;
  text-align: center;
  background: #57bd35;
  margin: 0 auto;
  max-width: 300px;
  text-shadow: 0 1px 0 rgba(0, 0, 0, .5);
  box-shadow: 0 2px 0 0 rgba(0,0,0,.1),inset 0 -2px 0 0 rgba(56,136,30,.5);
}
a.button:link,
a.button:visited,
a.button:active {
  color: #fff;
}

a.button:hover {
  box-shadow: 0 2px rgba(0,0,0,.1),inset 0 -2px rgba(0,0,0,.1),inset 0 0 100px rgba(255,255,255,.2);
}

.noresults {
  text-align: center;
  padding: 2rem 2rem 3rem 2rem;
}

a:link {
  color: #000;
}

.noslug .info {
  grid-column: span 2;
}

.help {
  margin: 2rem 2rem 0 2rem;
}
.help p {
  text-align: justify; 
}

.help img {
  border: 2px solid grey;
  margin-top: 1rem;
}

@media screen and (max-width: 500px) {
  body {
    font-size: 12px;
    line-height: 1.2;
  }
  h1 {
    margin: 2rem 0;
  }
  .alternative {
    grid-template-columns: auto 1fr;
    grid-gap: 1rem;
  }
  li {
    padding: 1rem;
  }
  .cta {
    grid-column: 1 / -1;
    align-items: stretch;
  }
  .legacy {
    font-size: .9rem;
  }
}