New Post: How can select a div with classname contain "post"

hi, i want to  select  a div  which its  contain "post-1", "post-2", "post-3" is there any chance for me ?

<div id="post-405" class="post-405 post type-post status">

<div id="post-105" class="post-105 post type-post status">

<div id="post-5" class="post-5 post type-post status">

now i m using this but its cant get .

 HtmlNode Blog = doc.DocumentNode.SelectNodes(@"//div[@class="post"]))