There is a markup:
<div id="postAddingTab"> <div id="postContainer"> <div id="post"> <div id="postDescWrapper"> <textarea id="postDesc"> </textarea> </div> <div id="postWrapper"> <textarea id="post"> </textarea> </div> <div id="postButtons"> <button>Сохранить</button> </div> </div> <div id="postOptions"> </div> </div> </div> As a result, the button sticks to the right of the bottom textarea, despite the fact that it is in its div'e. Here you can see what is happening. (It is necessary to poke on top of the "tab" to create). If I comment on both textarea and write, for example, just text instead, then everything is ok, the button is placed as it were below the blocks framing the textarea.
Just in case, here is the css code