How to style a checkbox created using angularjs?

How can i customize the checkbox created using angular js? I can't able to change the html bcz am not allowed to customize the html in my company. I can only add css to the application. So, if theres any way that i could customize the checkbox using pure css.

here is the code created from angularjs

<input class="form-control form-chk ng-valid ng-valid-required ng-dirty ng-valid-parse ng-touched" type="checkbox" dirctrl="" name="WAIVE_CHARGES" ng-model="data[ctl.target_column]" ng-required="ctl.required" ng-true-value="'YES'" ng-false-value="'NO'" ng-disabled="Disable" ng-change="Handle_Change();" style="">