https://i.sstatic.net/iSz2e.png
<form class="form-inline">
<div class="form-group">
<div class="input-daterange input-group" id="datepicker">
<label>Beginning:</label>
<input type="text" class="input-sm form-inline" name="start" />
<span class="input-group-addon"><i class="fa fa-calendar fa-lg" aria-hidden="true"></i></span>
</div>
</div>
<div class="form-group">
<div class="input-daterange input-group" id="datepicker">
<label>End:</label>
<input type="text" class="input-sm form-inline" name="end" />
<span class="input-group-addon"><i class="fa fa-calendar fa-lg" aria-hidden="true"></i></span>
</div>
</div>
</form>
By changing the class attribute from "form-control" to "input", I am able to make the necessary adjustments. However, it unfortunately affects the overall size of the entire form :(