求助：微信小程序默认字体大小和样式是什么？

- 当前 Bug 的表现（可附上截图） tabBar 图标不显示 [图片] 本项目开始正常显示，但是到了快结束时。tabBar图标不显示了。 功能正常 代码如下： [代码]{[代码][代码]  [代码][代码]"pages"[代码][代码]: [[代码][代码]    [代码][代码]"pages/index/index"[代码][代码],[代码][代码]    [代码][代码]"pages/experience/experience"[代码][代码],[代码][代码]    [代码][代码]"pages/details/details"[代码][代码],[代码][代码]    [代码][代码]"pages/content/content"[代码][代码],[代码][代码]    [代码][代码]"pages/consult/consult"[代码][代码],[代码][代码]    [代码][代码]"pages/condition/condition"[代码][代码],[代码][代码]    [代码][代码]"pages/case/case"[代码][代码],[代码][代码]    [代码][代码]"pages/about/about"[代码][代码],[代码][代码]    [代码][代码]"pages/dynamic/dynamic"[代码][代码]  [代码][代码]],[代码][代码]  [代码][代码]"window"[代码][代码]: {[代码][代码]    [代码][代码]"backgroundTextStyle"[代码][代码]: [代码][代码]"light"[代码][代码],[代码][代码]    [代码][代码]"navigationBarBackgroundColor"[代码][代码]: [代码][代码]"#3185fc"[代码][代码],[代码][代码]    [代码][代码]"navigationBarTitleText"[代码][代码]: [代码][代码]"互联网"[代码][代码],[代码][代码]    [代码][代码]"navigationBarTextStyle"[代码][代码]: [代码][代码]"white"[代码][代码],[代码][代码]    [代码][代码]"backgroundColor"[代码][代码]: [代码][代码]"#3185fc"[代码][代码]  [代码][代码]},[代码][代码]  [代码][代码]"tabBar"[代码][代码]: {[代码][代码]    [代码][代码]"selectedColor"[代码][代码]: [代码][代码]"#0D98FC"[代码][代码],[代码][代码]    [代码][代码]"backgroundColor"[代码][代码]: [代码][代码]"#F8F8F8"[代码][代码],[代码][代码]    [代码][代码]"borderStyle"[代码][代码]: [代码][代码]"white"[代码][代码],[代码][代码]    [代码][代码]"list"[代码][代码]: [[代码][代码]      [代码][代码]{[代码][代码]        [代码][代码]"pagePath"[代码][代码]: [代码][代码]"pages/index/index"[代码][代码],[代码][代码]        [代码][代码]"iconPath"[代码][代码]: [代码][代码]"images/list/homepage_fill.png"[代码][代码],[代码][代码]        [代码][代码]"selectedIconPath"[代码][代码]: [代码][代码]"images/list/homepage_fill_2.png"[代码][代码],[代码][代码]        [代码][代码]"text"[代码][代码]: [代码][代码]"首页"[代码][代码]      [代码][代码]},[代码][代码]      [代码][代码]{[代码][代码]        [代码][代码]"pagePath"[代码][代码]: [代码][代码]"pages/case/case"[代码][代码],[代码][代码]        [代码][代码]"iconPath"[代码][代码]: [代码][代码]"images/list/manage_fill.png"[代码][代码],[代码][代码]        [代码][代码]"selectedIconPath"[代码][代码]: [代码][代码]"images/list/manage_fill_2.png"[代码][代码],[代码][代码]        [代码][代码]"text"[代码][代码]: [代码][代码]"案例"[代码][代码]      [代码][代码]},[代码][代码]      [代码][代码]{[代码][代码]        [代码][代码]"pagePath"[代码][代码]: [代码][代码]"pages/condition/condition"[代码][代码],[代码][代码]        [代码][代码]"iconPath"[代码][代码]: [代码][代码]"images/list/dynamic_fill.png"[代码][代码],[代码][代码]        [代码][代码]"selectedIconPath"[代码][代码]: [代码][代码]"images/list/dynamic_fill_2.png"[代码][代码],[代码][代码]        [代码][代码]"text"[代码][代码]: [代码][代码]"动态"[代码][代码]      [代码][代码]},[代码][代码]      [代码][代码]{[代码][代码]        [代码][代码]"pagePath"[代码][代码]: [代码][代码]"pages/consult/consult"[代码][代码],[代码][代码]        [代码][代码]"iconPath"[代码][代码]: [代码][代码]"images/list/group_fill.png"[代码][代码],[代码][代码]        [代码][代码]"selectedIconPath"[代码][代码]: [代码][代码]"images/list/group_fill_2.png"[代码][代码],[代码][代码]        [代码][代码]"text"[代码][代码]: [代码][代码]"咨询"[代码][代码]      [代码][代码]}[代码][代码]    [代码][代码]][代码][代码]  [代码][代码]}[代码][代码]}[代码]控制台没有报错！路径没有问题！ 请大神帮帮忙。谢谢！