I have one row and two cols which I used in my project and I provided screenshot of the problem I want to remove space between two div in columns please help me
here is my code and I give different color to the columns which I used and inside col I used well now i want to join these two well and remove any padding or margin or space between them how I achieve this 

```html
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
    <div class="container-fluid">
      <div class="row">
  <div class="col-md-3" style="background-color:green;">
          <div class="well well-lg" style="margin-top:10px;">
   <img src="admin.png" class="img-responsive img-thumbnail" width="70" 
            height="50"> <span style="font-size: 20px;"> Admin Name</span>
    </div>

   </div>

  <div class="col-md-9" style="background-color:red;">
   <div class="well well-lg" style="margin-top:10px;">
     <h2 style="text-align: center;">Welcome to Admin Panle</h2>

    </div>

  </div>
  </div>
       </div>
```

[this is screen shot of mu project](https://i.stack.imgur.com/VZr6y.png)