H5_0024: the case can not be determined in advance css size can be dynamically modified by JS

        $(function(){

            function Heights(){

                var WinH = $(window).height();

                $('.img3').height(WinH * 0.5);

　　　　  $('.img3').height($('.img3').width() * 1.8);

            }

            Heights();

            $(window).resize(function(){

                Heights();

            })

        })