Header Slider problem in Firefox (Sydney Pro)

In Chrome and IE header slider works excellent but in Firefox I see one problem all of my Sydney Pro Theme websites. After scrolling down, you can see a white space between header slider and the next row!
I have tried change the pictures high (e.g. 1920x1080, 1920x1200, etc.), but didn’t works.
The rows speed doesn’t work.

Firefox Quantum 65.0.1 (64 bit)

Website: paratrade.ch



Try to use this CSS code as a workaround to disable the parallax.

You can add CSS code in Customize → Additional CSS section.

.sydney-hero-area #slideshow .slide-item {
    background-position-y: center !important;

As another workaround, you can make first row background white.

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.

Thank you for your help! It solve my problem, but do you have another solution? I don’t like disable the parallax effect.

You are welcome!

As I mentioned above, you can make the first row background white (Liebe Gleitschirmpiloten), instead of disabling parallax.

Kind Regards, Roman.