@media all and (min-width:1px) 
{
    
    h1 { font-size: 24px; }
    h2 { font-size: 20px; }
    h3 { font-size: 18px; }
    h4 { font-size: 16px; }
    h5 { font-size: 14px; }
    
}

@media all and (min-width:340px) 
{
    
    
}

@media all and (min-width:480px) 
{
    
    
}

@media all and (min-width:600px) 
{
    
    
}

@media all and (min-width:768px) 
{
    
    
}

@media all and (min-width:1024px) 
{
    
    
}