* {
  box-sizing: border-box;
}
body, html {
  width: 100%;
  height: 100%;
  margin: 0px;
}
.table {
  width: 100%;
  height: 100%;
  display: table;
}
.cell {
  display: table-cell;
  width: 100%;
  height: 100%;
  vertical-align: middle;
}
.content {
  padding: 20px;
  width: 100%;
  max-width: 500px;
  margin: 0px auto;
}
h1 {
  line-height: 34px;
  margin-bottom: 38px;
}
p {
  font-size: 16px;
  line-height: 26px;
}