.app-icon {
    background-image: url(190115_mielemeter_branding_logo_.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50%;
    background-color: #FFFFFF;
	width: 300px;
  height: 300px;
  display: block;
  margin: 0 auto;
  border-radius: 4px;
  text-align: center;
}