@import url("https://fonts.googleapis.com/css?family=Arvo");

body,
html {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
  height: 100%;
  background: #f5f4f4;
  font-size: 13px;
  font-family: "Arvo", monospace;

  display: block;
}

.section {
  padding: 2rem;

  @media screen and (min-width: 768px) {
    padding: 4rem;
  }

  display: block;
}

h1 {
  font-size: 2rem;
  margin: 0 0 1.5em;
}

.grid {
  display: grid;
  grid-gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  grid-auto-rows: 150px;
  grid-auto-flow: row dense;
}

.item {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-sizing: border-box;
  background: #0c9a9a;
  color: #fff;
  grid-column-start: auto;
  grid-row-start: auto;
  color: #fff;
  background: url("https://images.unsplash.com/photo-1470124182917-cc6e71b22ecc?dpr=2&auto=format&fit=crop&w=1500&h=1000&q=80&cs=tinysrgb&crop=");
  background-size: cover;
  background-position: center;
  box-shadow: -2px 2px 10px 0px rgba(#444, 0.4);
  transition: transform 0.3s ease-in-out;
  cursor: pointer;
  counter-increment: item-counter;
}

.item:nth-of-type(3n) {
  background-image: url("https://images.unsplash.com/photo-1422255198496-21531f12a6e8?dpr=2&auto=format&fit=crop&w=1500&h=996&q=80&cs=tinysrgb&crop=");
}

.item:nth-of-type(4n) {
  background-image: url("https://images.unsplash.com/photo-1490914327627-9fe8d52f4d90?dpr=2&auto=format&fit=crop&w=1500&h=2250&q=80&cs=tinysrgb&crop=");
}

.item:nth-of-type(5n) {
  background-image: url("https://images.unsplash.com/photo-1476097297040-79e9e1603142?dpr=2&auto=format&fit=crop&w=1500&h=1000&q=80&cs=tinysrgb&crop=");
}

.item:nth-of-type(6n) {
  background-image: url("https://images.unsplash.com/photo-1464652149449-f3b8538144aa?dpr=2&auto=format&fit=crop&w=1500&h=1000&q=80&cs=tinysrgb&crop=");
}

.item:after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: black;
  opacity: 0.3;
  transition: opacity 0.3s ease-in-out;
}

.item:hover {
  transform: scale(1.05);
}

.item:hover:after {
  opacity: 0;
}

.item--medium {
  grid-row-end: span 2;
}

.item--large {
  grid-row-end: span 3;
}

.item--full {
  grid-column-end: auto;

  @media screen and (min-width: 768px) {
    grid-column: 1/-1;
    grid-row-end: span 2;
  }
}

.item__details {
  position: relative;
  z-index: 1;
  padding: 15px;
  color: #444;
  background: #fff;
  text-transform: lowercase;
  letter-spacing: 1px;
  color: #828282;
}

.item:before {
  content: counter(item-counter);
  font-weight: bold;
  font-size: 1.1rem;
  padding-right: 0.5em;
  color: #444;
}