.button_zurueck {
  background-color: #ce0025;
  border: none;
  color: #ffffff;
  padding: 0.3em 1.1em;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 1em;
  margin: 1em 0.5em 2em 0em;
  cursor: pointer;
}
.button_weiter {
  background-color: #008000;
  border: none;
  color: #ffffff;
  padding: 0.3em 1.1em;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 1em;
  margin: 1em 0.5em 2em 0em;
  cursor: pointer;
}
.button_weiter:hover,
.button_weiter:visited,
.button_weiter:link,
.button_weiter:active {
  text-decoration: none;
  color: white;
}