I can't get this button not to be overlapping?

This is the piece beating me:
<div class="row">
<div class="col-md-3 form-group">
<label for="agencySelect">Choose an Option</label>
<select id="agencySelect" onchange="loadClientsFromSS(selectedAgency())">
<option value=""></option>
</select>
</div>
<div class="col-md-3 form-group">
<label for="clientSelect">Choose Another option</label>
<select id="clientSelect" onchange="loadClientTasks(selectedClient())">
<option value="">dlfajgflksahgldsjngsglsgbçdjhlkhbfsçd</option>
</select>
</div>
<div class="col-md-3 form-group">
<div id="addTaskBtnSpot"><button id="addTaskBtn" type="submit" class="btn btn-primary mb-2" onclick="saveData()">Add</button></div>
</div>
</div>
Here is the Fiddle
Appreciate your help!