css fixed 失效问题解法
https://stackoverflow.com/questions/11258877/fixed-element-disappears-in-chrome
开启css硬件加速,transform: translateZ(0);
更好的办法是: 调整布局,把父元素的absoluate 属性去掉
https://stackoverflow.com/questions/11258877/fixed-element-disappears-in-chrome
开启css硬件加速,transform: translateZ(0);
更好的办法是: 调整布局,把父元素的absoluate 属性去掉