/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
   .mainDiv {
      text-align: justify;
      width: 100%;
      margin-left: 0%;
   }

   h1 {
      font-size: 28px;
   }
   
   h3 {
      font-size: 22px;
   }
   
   p {
      font-size: 16px;
   }
   
   body {
     font-size: 16px;
   }
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
   .mainDiv {
      text-align: justify;
      width: 100%;
      margin-left: 0%;
   }

   h1 {
      font-size: 28px;
   }
   
   h3 {
      font-size: 22px;
   }
   
   p {
      font-size: 16px;
   }
   
   body {
     font-size: 16px;
   }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
   .mainDiv {
      text-align:justify;
      width: 70%;
      margin-left: 15%;
   }

   h1 {
      font-size: 32px;
   }
   
   h3 {
      font-size: 26px;
   }
   
   p {
      font-size: 20px;
   }
   
   body {
     font-size: 20px;
   }
}

/* Large devices (laptops/desktops, 992px and up) */
/*
@media only screen and (min-width: 992px) {
}
*/

/* Extra large devices (large laptops and desktops, 1200px and up) */
/*
@media only screen and (min-width: 1200px) {
} 
*/