@media only screen and (min-device-width: 300px) and (max-device-width: 800px){
      #image_responsive{
		  height: 300px;
	  }
    }
	
	
	 @media only screen and (min-device-width: 300px) and (max-device-width: 800px){
      #about{
		 margin-top: -100px;
	  }
    }