Struggling to find the right configuration for this Bootstrap 3 setup...
https://i.stack.imgur.com/ZsTdI.png
I have an input field, but I'm having trouble placing the image in that position.
<div class="row">
<div class="col-sm-4 col-md-4">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-user"></span></span>
<input size="16" class="form-control" type="text" name="nombre" required placeholder="Tu nombre completo">
</div>
</div>
</div>
<div class="row">
<div class="col-sm-4 col-md-4">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input size="16" class="form-control" type="email" name="correo" required placeholder="Tu email">
</div>
</div>
</div>
<div class="row">
<div class="col-sm-4 col-md-4">
<div class="input-group-btn">
<button type="button" class="btn btn-success" id="agregar"><span class="glyphicon glyphicon-plus"></span> Agregar usuario sugerido</button>
</div>
</div>
</div>