Width="100%"


Width="50%"


Width="25%"


Width="200"


auto width


Width="100%"


Width="50%"


Width="25%"


Width="200"


auto width


Width="100%"


Width="50%"


Width="25%"


Width="200"


auto width



The Width property may be set either by using fixed values (pixels) or by using a relative value (percentages).
If the Width is not specified the controls will have the same width as their container.

<obout:OboutButton runat="server" ID="btn1"  Width="250" ... />
<obout:OboutDropDownList runat="server" ID="ddl1"  Width="250" ... />
<obout:OboutTextBox runat="server" ID="txt1"  Width="250" ... />