Bootstrap Input Sizing
Input Sizing in Forms
Set the heights of input elements using classes like .input-lg and .input-sm.
Set the widths of elements using grid column classes like .col-lg-*and .col-sm-*.
Height Sizing
The following examples shows input elements with different heights:
Example
<form>
<div class="form-group">
<label for="inputsm">Small input</label>
<input class="form-control input-sm" id="inputsm" type="text">
</div>
<div class="form-group">
<label for="inputdefault">Default input</label>
<input class="form-control" id="inputdefault" type="text">
</div>
<div class="form-group">
<label for="inputlg">Large input</label>
<input class="form-control input-lg" id="inputlg" type="text">
</div>
</form>
Try it Yourself »
<div class="form-group">
<label for="inputsm">Small input</label>
<input class="form-control input-sm" id="inputsm" type="text">
</div>
<div class="form-group">
<label for="inputdefault">Default input</label>
<input class="form-control" id="inputdefault" type="text">
</div>
<div class="form-group">
<label for="inputlg">Large input</label>
<input class="form-control input-lg" id="inputlg" type="text">
</div>
</form>
You can quickly size labels and form controls within a Horizontal form by
adding .form-group-* to the <div class="form-group"> element:
You can also quickly size all inputs and other elements inside an .input-group with the .input-group-sm or .input-group-lg classes:
Column Sizing
The following examples shows input elements with different widths using different
.col-xs-* classes:
Example
<div class="form-group row">
<div class="col-xs-2">
<label for="ex1">col-xs-2</label>
<input class="form-control" id="ex1" type="text">
</div>
<div class="col-xs-3">
<label for="ex2">col-xs-3</label>
<input class="form-control" id="ex2" type="text">
</div>
<div class="col-xs-4">
<label for="ex3">col-xs-4</label>
<input class="form-control" id="ex3" type="text">
</div>
</div>
Try it Yourself »
<div class="col-xs-2">
<label for="ex1">col-xs-2</label>
<input class="form-control" id="ex1" type="text">
</div>
<div class="col-xs-3">
<label for="ex2">col-xs-3</label>
<input class="form-control" id="ex2" type="text">
</div>
<div class="col-xs-4">
<label for="ex3">col-xs-4</label>
<input class="form-control" id="ex3" type="text">
</div>
</div>
Help Text
Use the .help-block class to add a block level help text in forms:
Example
<div class="form-group">
<label for="pwd">Password:</label>
<input type="password" class="form-control" id="pwd" placeholder="Enter password">
<span class="help-block">This is some help text...</span>
</div>
Try it Yourself »
<label for="pwd">Password:</label>
<input type="password" class="form-control" id="pwd" placeholder="Enter password">
<span class="help-block">This is some help text...</span>
</div>