Just to Clarify.
You can remove the logo here: ACP Appearance > Style properties > Basic Options
However it will still show the text name of the forum
A better way to remove both image and text might be to go to the style template extra.less and add this code:
Code:
.p-header-logo--image
{display:none}
NB:The style properties edits and extra.less edits only apply to the style you are changing, so if you have more than one (parent) style you must make sure you are doing this in either the style you want to hide the logo for, or in all parent styles (child styles will inherit)
However the advertising slot for the banner (Header Container) is global and so will show on all styles.
BUT will not show on mobiles by default. To make the header display on mobiles you add this to extra.less (again only applies to the style/s not globally)
Code:
.p-header {
display: block !important;
}
I tried a 890 x 110 banner in the header and works fine.
BTW, Also you can of course add a background image to the header.
ACP Appearance > Style properties > Header and Navigation > Header/Logo Row - but this is differnt