/* CSS Document */
* {
   box-sizing: border-box;
  }

body {background-image: linear-gradient(to right, darkgrey, white);}

.header {
 // border: 1px solid red;
  padding: 5px;
}

#divLeft{
	float: left;
	margin-left: 20px;
	width: 200px;
	height: 95vh;
}
 
#divMain {
	overflow: scroll;
	float: left;
	width: calc(100% - 440px);
	height: 95vh;
}

#divRight {
	margin-right: 20px;
	float: left;
	width: 200px;
	height: 95vh;
}

.divStart {
	position: absolute;
	width: 650px;
	top: 80px;
	height: 550px;
	margin-left: -325px;
	left: 50%;
	background-color: transparent; /* keine schwarze Fläche */
	text-align: center;
	z-index: 20;
}

#divStartContent {
	width: 100%;
	height: 100%;
	min-height: 50px; /* verhindert 0px Höhe */
}