* {
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
}

body {
  font: 300 14px/1.4 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: #eee;
  margin: 0;
  padding: 0;
}

.header {
  margin: 25px;
}