header{
    font-size: 25px;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    background-color: #012E40;
    color: white;
}
.navigation { 
  display: flex; 
  background-color: #02735E; 
  
} 
.navigation li { 
list-style-type: none; 
align-content: center;
} 
.navigation a { 
  padding: 15px; 
  display: inline-block; 
  color: white; 
  text-decoration: none; 
} 
.navigation a:hover, #akt_tab { 
  background-color:#038C65; 
} 
 body{
  background-color: #011526;
 }

 img{
  height: 500px;
 }

 main{
  color: white;
 }