访问Css3 MEdia中的嵌套Div

Question

我想根据屏幕尺寸[使用css3 @media 800,900]

重新调整图像大小

代码如下：

<div id="content-area">
<div class="view-contnet">
<div class="view_view_develop">
<div class="content_viewing">

<img scr="c:regelis\a.png" width="670" height="880" title="hi" >
@media and (max -width:880)
{
.content_viewing img
{
width=50%
}

The image is not resizing when i resize my browser

}