Button short code not (always) responsive

Hi,

To build the website of our company, we are using WordPress + Forest theme + LayerSlider.

We embedded some button short codes from SU in many places in our websites:
– On regular pages, such as on our agency page, the buttons are responsive
– As soon as they are part of a slider, such as on our homepage, they stop being responsive

Any idea on how to fix this?

https://ww.wp.xz.cn/plugins/shortcodes-ultimate/