Unable to position well to center - html

Question

I am trying to position a well to the center of the page. There are similiar questions on SO, but the code is somewhat different to mine. My HTML is given below:
<div class="container">
<div class="row">
<div class="well col-sm-4" align="center">
<div class="text-center">
<p><h2>Login</h2></p>
</div>
<hr>
<form role="form">
<div class="form-group text-center">
<label for="username">Username</label>
<input type="text" class="form-control" id="username">
</div>
<div class="form-group text-center">
<label for="password">Password</label>
<input type="password" class="form-control" id="password">
</div>
<hr>
<div class="text-center">
<button type="submit" class="btn btn-primary">Submit</button>
<button type="button" class="btn btn-warning">Forgot password</button>
</div>
<hr>
<div class="text-center">
<p>Don't have an account yet? <a>Create one now</a></p>
</div>
</form>
</div>
</div>
</div>
I tried putting the well div inside another div with col-md-12 and other values, but the well did not get centered. Does anyone know how I could center the well in the page?

Answer 1

You could try offsetting columns
Give your columns the class col-sm-offset-4
Like so: <div class="well col-sm-offset-4 col-sm-4">
Example: http://jsfiddle.net/u48v34p7/

Answer 2

<div class="container">
<div class="row">
<div class="col-sm-4 well col-sm-offset-4" align="center">
<div class="text-center">
<p><h2>Login</h2></p>
</div>
<hr>
<form role="form">
<div class="form-group text-center">
<label for="username">Username</label>
<input type="text" class="form-control" id="username">
</div>
<div class="form-group text-center">
<label for="password">Password</label>
<input type="password" class="form-control" id="password">
</div>
<hr>
<div class="text-center">
<button type="submit" class="btn btn-primary">Submit</button>
<button type="button" class="btn btn-warning">Forgot password</button>
</div>
<hr>
<div class="text-center">
<p>Don't have an account yet? <a>Create one now</a></p>
</div>
</form>
</div>
</div>
</div>

Answer 3

Just replace your code here:
<div class="well col-sm-4" align="center">
With this (you can also isolate the style in a CSS class):
<div class="well col-sm-4" style="margin:auto; float:none;">

Answer 4

You could put two dummy divs to make your well centered. I have noticed that you only have one col-sm-4
Try this:
<div class = "col-sm-4"></div>
<div class = "well col-sm-4">
<!-- your content here -->
</div>
<div class = "col-sm-4"></div>
In that way you can have your well centered.
You can also do this
<div class = "well col-md-6 col-md-offset-3">
<!-- content here -->
</div>
To make your well centered on desktop view 1280px and above.