body{
  font-size: 20px;
  background-color: lightblue;
  height: 98vh;
display:flex;
flex-direction:column;
align-items: center;
}
.header{
  height: 15%;
}
img{
  height: 320px;
}
.nav{
  height: 10%;
}
.main{
  height:60%;
  display:flex;
  flex-direction: row;
  justify-content:space-around;
  width:100%;
}
#links,#rechts{
  height:300px;
  width:30%;
  
}

.footer{
  text-align:center;
  height: 15%;
}