checkbox.css

.ptl-checkbox label {
  cursor: pointer;
  position: relative;
  width: 20px;
  height: 20px;
  left: 8px;
  top: 8px;
  margin: 0px;
  background: transparent;
  border: #999 solid 1px;
}

.ptl-checkbox label:after {
  filter: alpha(opacity=0);
  opacity: 0;
  content: '';
  position: absolute;
  width: 15px;
  height: 10px;
  background: transparent;
  border: 3px solid @orange;
  border-top: none;
  border-right: none;
  top: 2px;
  left: 2px;
  transform: rotate(-45deg);
}

.ptl-checkbox label:hover:after {
  /*-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=30)";*/
  filter: alpha(opacity=30);
  opacity: 0.3;
}

.ptl-checkbox  input[type="checkbox"]:checked + label {
  border: @orange solid 1px;
}

.ptl-checkbox input[type="checkbox"]:checked + label:after {
  filter: alpha(opacity=100);
  opacity: 1;
}

.ptl-checkbox input[type="checkbox"] {
  visibility: hidden;
}

checkbox.html

 <div class="ptl-checkbox">
        <!--<span class="checkbox-special" ng-click="addItem(marche)"></span>-->
        <input type="checkbox" id="'{{marche.id}}'"/>
        <label for="'{{marche.id}}'" ng-click="addItem(marche)"></label>
    </div>