.cn-categories {
  display: grid;
  grid-gap: 1em;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.cn-category {
  text-align: center;
}
.cn-category h2 {
  font-size: 1.2em;
  margin-top: 10px;
  margin-bottom: 10px;
}
.cn-category img {
  height: 40px;
}
.cn-category a p {
  color: black;
}
.cn-category a {
  display: block;
  height: 100%;
  text-decoration: none;
  padding: 1em;
}
.cn-section > h1 {
  color: #555;
  font-size: 1.4em;
  border-bottom: 1px solid #ccc;
  padding-bottom: 0.5em;
}
.hero {
  position: relative;
  text-align: center;
  clear: both;
  margin-bottom: 2em;
  padding: 4em 0.5em;
  background-image: url(img/herotrain.jpg);
  background-size: cover;
  background-position: bottom;
}
.hero h1 {
  font-size: 55px;
  letter-spacing: 1.6px;
}
.hero p {
  font-size: 21px;
  letter-spacing: 1.6px;
  font-weight: 300;
}
.hero .content {
  color: #FFF;
}
.search {
    width: 100%;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}
.search input {
    height: 3em;
    width: 100%;
    color: black;
    border-radius: 5px;
    border-color: #ccc;
    padding: 0 20px;
}

.search input[type="submit"] {
    display: none;
}
.search::after {
    content: "\1F50D";
    font-family: "entypo";
    font-size: 30px;
    line-height: 0;
    position: absolute;
    right: 20px;
    text-align: center;
    top: 50%;
    z-index: 1;
    color: #666;
}