* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
html {
  background-image: url("../img/hintergrund.png");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: top center;
  height: 100%;
}
html body {
  height: 100%;
}
html body .row {
  width: 100%;
  height: 100%;
  position: relative;
}
html body .row .col1 {
  max-width: 50%;
  width: 100%;
  float: left;
  height: 100%;
}
html body .row .col1 a {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  display: block;
  -moz-box-sizing: border-box;
  outline: none;
}
html body .row .col2 {
  max-width: 50%;
  width: 100%;
  float: left;
  height: 100%;
}
html body .row .col2 a {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  display: block;
  -moz-box-sizing: border-box;
  outline: none;
}