iOS 用JS修改WKWebView格式

NSString *suitStr = @"";     

   NSString *htmlStr = contentStr;    

    NSString *htmlcontent = [suitStr stringByAppendingString:htmlStr];           

NSString *webContent = [NSString stringWithFormat:@"\nbody{ padding:0; margin:0;}\n.view_h1{ width:90%%; margin:0 auto; display:block; overflow:hidden;  color:#333; padding:0.5em 0; line-height:1.0em; }\n.con{ width:90%%; margin:0 auto; color:#fff; color:#666; padding:0.5em 0; overflow:hidden; display:block;  line-height:1.8em;}\n.con h1,h2,h3,h4,h5,h6{ }\nimg{ width:auto; max-width: 100%% !important;height:auto !important;margin:0 auto;display:block;}\n*{ max-width:100%% !important;}\n\n

%@

",htmlcontent];

      [self.webView loadHTMLString:webContent baseURL:nil];