H5 page apple-side floating problem

Recently in the development of a H5 app side, front-end colleagues to write a good page, our back-end Java dynamic page, testing the time to find out what browser on Android is normal, such as 1, but the Apple end no matter what browser appears on the bottom menu missing two 2
Figure one: normal display

Figure 2, not normal, lower the menu at the bottom.

Looking for the front-end debugging for a long time did not find any errors, the code is the same, and later found that the HTML page is less of this language statement resulting in Android and Apple display effect is not the same, less: lang= "en", because not to engage in front-end, also did not bother why this, in short, can be counted success! ~~~~~_ _

H5 page apple-side floating problem