custom css font-size in chrome on android does not work

I use some custom css to change the font size of text in the parallax section. This works fine except when using Chrome on android.

.entry-content .adamrob_parallax h1 {
font-size: 60px !important;
}

When i switch to ‘use the desktopversion’ setting on chrome for android the custom css is displayed nicely.

https://www.ads-software.com/plugins/adamrob-parallax-scroll/