Take a look at this code snippet:
<div class="form-group col-md-6">
<label class="col-md-4">Last Updated (Real Time)</label>
<input class="form-control col-md-8" type="text" ng-model="status.lastUpdated" ng-readonly="true"/>
</div>
This particular code segment consists of a label and an input field. What steps should be taken to ensure that the input field fills up the entire grid space?