.jimu-widget-extent-navigate {background-color: transparent;}.jimu-widget-extent-navigate .operation {color: white; background: rgba(0,0,0,0.5); border-radius: 0; -webkit-border-radius: 0; -moz-border-radius: 0; margin-bottom: 5px;}.jimu-widget-extent-navigate .operation.jimu-state-disabled:hover{background: rgba(0,0,0,0.5);}