Hi

Could you please give me a screenshot which portion you want to change?

-Regards

https://photos.app.goo.gl/qLcVSBuw5qM9BAnP8

background and logo

Hi

Did you change the background, its seems different from the screenshot you provided

https://prnt.sc/26cg601

https://anpiubezpieczenia.pl/pl/aktualnosci/ciekawy-tytul-dotyczacy-ubezpieczen

please look at link not the main site .

Use this custom css

.view-article #sp-main-body .container .article-details-header-wrapper{

    background-image: url("wallpaperaccess.com/full/267434.jpg") !important;
}

Path towards custom CSS: Extensions>Templates>Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.