html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #f7f7f7;
  overflow: auto;
}

ul,
li {
  list-style: none;
}

hr {
  display: block;
  width: 80%;
  height: 1px;
  margin: 80px auto;
  border: none;
  background-color: #d4d4d4;
}

.viewport {
  height: 400px;
  margin: 40px auto !important;
  border: 1px solid #fff;
  border-radius: 4px;
  background-color: #324042;
}

.list,
.list .item {
  display: flex;
  justify-content: center;
  align-items: center;
}
.list .item {
  width: 120px;
  height: 100px;
  margin: 0 20px;
  background-color: #324042;
  cursor: pointer;
}
.list img {
  width: auto;
  height: auto;
  max-width: 120px;
  max-height: 100px;
}