Slider Width is not enough

Hello,

i’m using your matrix theme and i have a problem with the slider width – everything else is fine – great work!!

i try so many ways to get this problem solved but till now i have no solution.

I start creating Posts with post image an add it to the slider over the customizer. In the boxed version everything is fine – in the full width version there is space between the right image side and the right desktop side.

I try to change the size in functions.php and reload the images
add_image_size(‘matrix_slider_post’, 1500, 500, true);

But the space between the desktop side and the image is exactly the same.

Should i use “100%” as the 1500 pixels or is there any css code i can use to bring the silder image up to full width ??

best regards from germany
yannosch