.site-footer {
    background-image:url("https://www.cathyweber.net/wp-content/uploads/2017/03/footer.jpg");
	background-repeat:no-repeat;
}

.art-article th, .art-article td
{
  padding-top: 5px;
  padding-right: 10px;
  padding-bottom: 5px;
  padding-left: 10px;
  vertical-align: middle;
  text-align: center;
}

@media only screen and (max-width: 480px), (max-device-width: 480px) {
.art-article th, .art-article td
{
  padding-top: 7px;
  padding-right: 5px;
  padding-bottom: 7px;
  padding-left: 5px;
  vertical-align: middle;
  text-align: center;
}
}