html, body{
  margin: 0;
  padding: 0;
  height: 100%;
}
body{
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.error-cotroller-body{
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.item-header-content{
  text-align: center;
}