#ui_layer{position:absolute;top:0;bottom:0;left:0;right:0;z-index:1}body.loaded #ui_layer{transition:z-index 0s linear 0.5s;z-index:10}#ui_layer #mute_toggle{position:absolute;right:25px;top:25px;width:50px;height:50px;background:url(../files/icon_sound_on.ef8f74e772c24d0c7894a4a2c7825efc.svg) no-repeat;background-size:100% 100%;border:none}#ui_layer #mute_toggle.muted{background-image:url(../files/icon_sound_off.2dd1eda86db8fbb06b07c6e0dcf670de.svg)}