Transparent header

.header-image img {
 background: transparent;
}

your theme or site is not calling a custom-header.css stylesheet.

please try working with a browser inspection tool to identify which style you need to edit to make the header image background transparent, or post in your theme’s forum at https://www.ads-software.com/support/theme/minimalizine#postform

Hi Andrew,

I’ve applied the code provided in the

/* Header section of style.css but still the same result.

the white background of the header image is set here:

/* Media */
img.size-full,
img.size-large,
.header-image img,
img.wp-post-image,
.entry-content img,
.entry-summary img,
.comment-content img,
.widget img {
	background: #fff;
	border: 1px solid #eee;
	max-width: 97.6%; /* Fluid images for posts, comments, and widgets */
	padding: 5px;
}

overwirite it by adding exactly the /css suggested by @andrew.

Awesome, that did the trick. I’ve also add

width:540px;
height: auto;

to resize the logo size.

Thanks for your help.

Ben