body .edui-default .edui-toolbar .edui-button.edui-for-gapfilling .edui-icon { width: 100px !important; border: 1px solid #ddd; border-radius: 4px; background-color: #fff !important; outline: none !important; } .edui-for-gapfilling .edui-icon::after { content: "点击插入填空项"; position: absolute; left: 6px; color: #333; font-size: 12px; }