>>>>Here is the issue I am working on. Obviously using Bootstrap 3 but I think the issue has more to do with the Selector's specificity than simply Bootstrap. But I can't seem to find the solution.
>>>>
>>>>Case 1.
>>>>The ASP.NET form class is set to "form-inline center".
>>>>The Head section of the page has the following style:
>>>>

>>>><style>
>>>>   @media only screen and (min-width: 768px) {
>>>>        .center { text-align: center; }
>>>>    }
>>>>
>>>>  </style>
>>>>

>>>>
>>>>Then elements of a Div element of class "form-group" are centered on the page. As well as any other element of the page is centered.
>>>>
>>>>Case 2.
>>>>I want to remove the .center class from the "form-inline center" and center only one Div of "form-group"
>>>>So I enter a style "text-align" to this particular "form-group" as follows:
>>>>

>>>>   <div class="form-group" style="text-align: center" >
>>>>        <asp:label ID="lblName" class="control-label" runat="server">Enter:</asp:label>
>>>>        <asp:textbox id="txtName" Width="150" MaxLength="15" Runat="server" CssClass="form-control"></asp:textbox>
>>>>        <asp:Button runat="server" CssClass="btn btn-primary" ID="btnSubmit" Enabled="true" Text="Submit" onclick="btnButton_Click" />
>>>>    </div>
>>>>

>>>>
>>>>But the div "form-group" is NOT centered.
>>>>
>>>>I suspect that this is due to the fact that "specificity" of style defined in the Div is lower that it is in the Bootstrap class "form-inline"
>>>>
>>>>How do I increase the specificity of the style text-align for this "form-group"?
>>>
>>>I think you need to override display:

<div class="form-group" style="text-align: center;display:block">

>>
>>You suggestion to use display: block style solved the problem. Thank you very much!
>
>Good guess I guess :-}

I wish I could find a good book and a comprehensive article on understanding different HTML styles. For example, before your suggestion, I tried "text-align: center" in many different variations. And I never thought about "display: block". So I would like read to why "display: block" made the difference here. I will google and see what I find.