body {
  margin: 0;
}

#holygrail {
    min-height: 100vh;
    flex-flow: column nowrap;
    margin: 24px;
    display: flex;
}

#main {
  flex-flow: row nowrap;
  display: flex;
  flex: 1;
}

header, main, footer  {
    display: flex;
    flex-direction: row;
    margin: 24px 0;
}



#content {
    flex: 3 1 auto;
    display: flex;
    flex-direction: column;
}

#secondary, #tertiary {
  flex: 1 2 auto;
}

#secondary {
  order: -1;
}


@media (max-width: 360px) {
    
    #main {
    flex-flow: column wrap;
    }
    
    #content {
        width: 100%;
    }
    
    
}


@media (min-width: 361px) and (max-width: 414px) {
    
    #content {
       width: 100%;
    }
}

@media only screen and (min-width : 1440px) {
    #holygrail {
        max-width: 1200px;
        margin: 0 auto;
    }
    

}