Hello Gustav Belin,

Sorry for late reply to this,
Can you try apply this CSS code in your template CSS file -> JoomlaFolder/templates/shaper_helix_ii/css/template.css

#eblog-wrapper .post-tags {

	background: #fff;

}



#ezblog-section {

	background: #fff;

}

After applied then clear everything cache and loading your page again and see is it okay for you?