* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
}

.success,
.error {
  color: white;
  padding: 5px 0 15px 0;
}

.success {
  background: green;
}

.error {
  background: red;
}