html - Set List Box width to fill column width in Bootstrap -


i have 3 list boxes part of html. list box fill column, width of listbox same width of column, not able so. in 'col-md-12', width of list box should width of screen. have tried this:

  1. set width of list box "width:100%" on each individual listbox.
  2. set width of parent div "width:100%" on each individual listbox.
  3. i have tried use container-fluid on root div.

but no luck.

i not want set width static size ('width: 550px').

<div class="form-horizontal container">     <hr />     <div class="form-group row">         <div class="col-md-6">             <select class="form-control" multiple="multiple" style="font-size:large">                 <option value="1">test234</option>                 <option value="3">test123</option>             </select>         </div>          <div class="col-md-6">             <select class="form-control" multiple="multiple" style="font-size:large">                 <option value="26">svc1</option>                 <option value="27">svc2</option>                 <option value="28">sp1</option>                 <option value="29">pn1</option>             </select>         </div>     </div>      <div class="form-group row col-md-12">         <select class="form-control" multiple="multiple" name="items" style="font-size:large"></select>     </div>    </div>

update #1:

as did not mention in question part of mvc view, here little hint, have blindly overlooked , spend hours trying fix. mine solution worked ok, when create new mvc 5 website project in visual studio 2013, creates it's own css file called site.css. in file has line looks this:

/* set width on form input elements since they're 100% wide default */ input, select, textarea {     max-width: 280px; }

which, whatever (in case pulling hair), not let change width. after commenting out, worked fine.

hope someone...

try this:

 <hr />     <div class="panel row">         <div class="col-md-6">             <select class="form-control" multiple="multiple" style="font-size:large">                 <option value="1">test234</option>                 <option value="3">test123</option>             </select>         </div>          <div class="col-md-6">             <select class="form-control" multiple="multiple" style="font-size:large">                 <option value="26">svc1</option>                 <option value="27">svc2</option>                 <option value="28">sp1</option>                 <option value="29">pn1</option>             </select>         </div>     </div>      <div class="form-group row col-md-12">         <select class="form-control" multiple="multiple" name="items" style="font-size:large"></select>     </div>

demo


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