@media screen and (min-width: 400px){    
    
    .main {
        padding: 2em;
        
    }

    .left-colum,.right-colum {
	width: 100%;
	
    } 

}

 @media screen and (min-width: 722px){
    
        .left-colum fieldset {
            padding: 0.65em 0;
            margin: 2em 0;
        } 

       

}
 
@media screen and (min-width: 1075px){
    
    
   
   .app {
        display: flex;
        justify-content: space-around;
        width: 100%;
    }

    .left-colum,
    .right-colum {
	    width: 50%;
	    margin: 1em;
    } 

    .left-colum form {
	    margin-left: 1em;
    }
     

    

}