* {
  box-sizing: border-box;
}

#container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.clearfix {
  clear: both;
}

.hidden {
  display: none;
}

#user-info {
  border: 1px solid #CCC;
  clear: both;
  margin: 0 auto 20px;
  max-width: 400px;
  padding: 10px;
  text-align: left;
}