sandbox-kinderlandwien/sandbox/css/login.css

#login h1 a,
.login h1 a {
  background: url(../img/logo-text-kinderlandwien.svg) 50% 50% no-repeat;
  background-size:contain;
  padding:0;
  margin:0;
  display:block;
  width:320px;
  height:147px;

}