Can a modal have a background image?

[omer72]

I tried to put background image to the modal but it doesnt work, any idea?

<modal ng-model="dc.show_leaderboard" class="leaderBoard">
                    <i class="close icon" ng-click="dc.close_modal()"></i>
                    <div class="header" >
                        Leader Board 123
                    </div>

</modal>

.leaderBoard{
    background: url('/assets/images/0011mainBG_SmallRobotBG_overlay1364x768.png') no-repeat !important;
    width: 200px;
    left: 90%;
    text-align: center;
    /*background: #485655 !important;*/
    color: white;
}