How do I remove the warning : You should write display: flex by final spec instead of display: box

[fengxinming]

Due to support IOS 8 I have to use display: box, how do I remove the warning?

[ai]

Replace display: box in your CSS. It is very big problem. You must solve it, not hide useful warning.

[ai]

You don’t need display: box for iOS 8. iOS 8 uses only display: -webkit-box, not display: box.

Write display: flex and Autoprefier will fix it to display: -webkit-box (for iOS 8) automatically.