'Is the width of the Bootstrap Dropdownlist changable?

I create asp.net MVC web project using Visual Studio 2015, the Bootstrap is used when I create UI form of razor view. I want to increase the width of Bootstrap Dropdownlist by using the following codes, but the code doesn't work, is width of the bootstrap dropdownlist changeable?

<div class="form-group">
        <div class="col-xs-3 text-right">
            <label for ="coordDesc">Coord </label>  
        </div>   
        <div class="col-xs-9" id="t1">                                
                    @Html.DropDownList("MovieType", new SelectList(ViewBag.MovieType, "Value", "Text"), new { @class = "form-control", style = "width:1200px;" })           
        </div>
 </div>

Solution 1:^[1]

what works for me:
@Html.DropDownList("MovieType", new SelectList(ViewBag.MovieType, "Value", "Text"), new { @class = "form-control", style = "max-width: 100%" }) and I took this answer from L Cruz 's comment

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Solution 1	Flowra

'Is the width of the Bootstrap Dropdownlist changable?

Solution 1:[1]

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Solution 1:^[1]