@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 568px) { 
    
    #main-slider .slider-inner h2{
    font-size: 20px;
    }
    
    #main-slider .slider-inner h2 > span{
    font-size: 20px;
    }

    
    }
}