body {
  background-image: url("https://lektuere-fuer-die-seele.de/images/bg2.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
}
.container-header {
  background: rgb(119,102,58);
  background: radial-gradient(circle, rgba(119,102,58,1) 0%, rgba(134,48,65,1) 100%);
  box-shadow: inset 0 5px 5px rgba(0,0,0,.03);
  position: relative;
  z-index: 10;
}
.footer {
    color: #fff;
  margin-top: 1em;
  background: radial-gradient(circle, rgba(119,102,58,1) 0%, rgba(134,48,65,1) 100%);
  box-shadow: inset 0 5px 5px rgba(0,0,0,.03);
  position: relative;
  z-index: 10;
}