让内容中的图片自适应宽不超出页面

wozhaoying

1. .content img{
   
2.     max-height:1500px;
   
3.     max-width:920px;
   
4.     width:expression_r((this.width > 920 && this.width > this.height) ? '920px': this.width+'px');
   
5. height:expression_r((this.height > 1500 && this.height > this.width) ? '1500px': this.height+'px');
   
6. float:middle;
   
7.     }

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