.clearfix:after {
  content: "";
  display: block;
  height: 0;
  line-height: 0;
  overflow: hidden;
  clear: both;
}

.clearfix:before,
.clearfix:after {
  content: "";
  display: table;
}

.clearfix:after {
  clear: both;
}

.container {
  margin: 0 auto;
}