title: submit button in the middle of form
body: <p>My question is: 
  May I put submit button not in the end of form, I need to put submit somewhere in the middle of form for comfort design layout. 
  For example:</p>
  
  <pre><code>&lt;form name="wide-search" action="/wide-search/" method="get" class="form-wide-search"&gt;
         &lt;select class="form-control cars"&gt;
                 &lt;option&gt;1&lt;/option&gt;
                 &lt;option&gt;2&lt;/option&gt;
         &lt;/select&gt;
         &lt;input type="text" class="form-control" placeholder="Поиск по всем объявлениям доски"&gt;
         &lt;select class="form-control region-search"&gt;
                 &lt;option&gt;1&lt;/option&gt;
                 &lt;option&gt;2&lt;/option&gt;
         &lt;/select&gt;
  //HERE IS FORM SUBMIT BUTTON
         &lt;div class="input-group"&gt;
              &lt;input class="form-control" id="searchInput" type="text" name="q" placeholder="Искать среди всех товаров и услуг" value="" x-webkit-speech=""&gt;
              &lt;div class="input-group-btn"&gt; 
                   &lt;button type="submit" class="btn btn-primary"&gt;Найти&lt;/button&gt;
              &lt;/div&gt;
         &lt;/div&gt;
  //AND THEN WE HAVE SOME SELECT'S WITH PARAMETRES, THAT ALSO CONNECTED TO THIS FORM BUT THEIR 
  PLACE IS AFTER SUBMIT BUTTON
         &lt;select class="form-control mark"&gt;
                 &lt;option&gt;1&lt;/option&gt;
                 &lt;option&gt;2&lt;/option&gt;
         &lt;/select&gt;
         &lt;select class="form-control model"&gt;
                 &lt;option&gt;1&lt;/option&gt;
                 &lt;option&gt;2&lt;/option&gt;
         &lt;/select&gt;
         &lt;select class="form-control year"&gt;
                 &lt;option&gt;1&lt;/option&gt;
                 &lt;option&gt;2&lt;/option&gt;
         &lt;/select&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>I need to create Html and Css design layout for this form, I get this task from programmer, and I'm not shur will this work true, or it is wrong layout. I didn't find answer in internet for this question. So I believe someone can explain me. In the end I add image of this form.<img src="https://i.stack.imgur.com/2Q2H0.png" alt="enter image description here"></p>