I have media queries , but in one, the font-size is not working
     @media only screen and (min-device-width: 375px) and (max-devicewidth:     667px)  
{ 
#topnav             {   padding:0px 0px 0px 0px;}
#topnav a           {   font-size:28px;}
#topnav h1          {   font-size:55px;}
#content            {   float:left;width:100%;margin: 20px 0px  0px 0px;  }
#content p          {   font-size:25px; color: #AAAAAA;text-align:justify;padding:0px 20px 10px 20px; }
#content h1         {   font-size:40px; color: #AAAAAA;line-height:140%;padding:0px 20px 0px 20px;text-align:center; }