body{
    margin: 20px;
    margin: center;

    background-image: url(../images/background_2.png);
    background-position: center; /* Center the Bild */
    background-repeat: no-repeat;



.container {
  display: grid;
  width: 100%;
  height: 100%;
  grid-template-areas: "img_left_top img_center img_center img_center img_right_top"
  "header header header header header"
  "nav nav nav nav nav"
  "aside_left aside_left main aside_right aside_right"
  "aside_left aside_left main aside_right aside_right"
  "img_left_bottom footer footer footer img_right_bottom";
  grid-template-columns: 70px 100px 2150px 100px 70px;
  grid-template-rows: 70px 230px 60px 740px 80px 70px;
}


.img_left_top {
  grid-area: img_left_top;
    background-image: url(../images/logo_kanten_links_oben_new_150_2.png);
    background-position: left top; /* left top the Bild */
    background-repeat: no-repeat;
}
.img_center {
  grid-area: img_center;
    border-top: 6px solid rgba(49,76,104,1);
    border-bottom: 2px solid rgba(49,76,104,1);
}
.img_right_top {
  grid-area: img_right_top;
    background-image: url(../images/logo_kanten_rechts_oben_new_150_2.png);
    background-position: right top; /* left top the Bild */
    background-repeat: no-repeat;
}
.header {
  grid-area: header;
    border-left: 6px solid rgba(49,76,104,1);
    border-right: 6px solid rgba(49,76,104,1);
}
.nav {
  grid-area: nav;
    border-top: 2px solid rgba(49,76,104,1);
    border-left: 6px solid rgba(49,76,104,1);
    border-right: 6px solid rgba(49,76,104,1);
    border-bottom: 2px solid rgba(49,76,104,1);
}
.aside_left {
  grid-area: aside_left;
  border-left: 6px solid rgba(49,76,104,1); 
}
.main {
  grid-area: main;
  border: 2px solid rgba(49,76,104,1); 
}
.aside_right {
  grid-area: aside_right;
  border-right: 6px solid rgba(49,76,104,1); 
}
.img_left_bottom {
  grid-area: img_left_bottom;
    background-image: url(../images/logo_kanten_links_unten_new_150_2.png);
    background-position: left bottom; /* left top the Bild */
    background-repeat: no-repeat;
}

.footer {
  grid-area: footer;
    border-bottom: 6px solid rgba(49,76,104,1);
    color: rgba(255,255,255,1.0);
    padding: top:10px;
}
.img_right_bottom {
  grid-area: img_right_bottom;
    background-image: url(../images/logo_kanten_rechts_unten_new_150_2.png);
    background-position: right bottom; /* right top the Bild */
    background-repeat: no-repeat;
}