/* Small Devices */
@media only screen and (max-width:767px){
    .navbar-default {
        background-color: #fff !important ;
        border-color:#e6e6e6 ;
    }
    .about-iphone img{
        width: 100%;
    }
    .purchase-now .col-md-3{
        text-align: center;
        padding-top: 50px;
    }

}
/* Small Devices And Tablets */
@media only screen and (max-width:768px){

    .header-iphone{
        display: none;
        
    }
    .header-text , .header-btns{
        text-align: center;
    }
}

/* Medius Devices , Desktop */
@media only screen and (min-width:992px){

    
}
/* Large Devices , Wide Screens */
@media only screen and (min-width:1200px){

    
}