html {
  height: 100%;
  overflow: hidden;
}

body {
  background: linear-gradient(to bottom, #ffffff 0%, #e5e5e5 100%);
  margin: 0;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.impressum {
  text-align: center;
}

.impressum a img {
  border: 0;
}