what is this 'box/strip' and how do I delete it?

I thought it might be some gallery/widget plugins but I disabled or deleted all of them and it’s still there.

Can you clarify which white strip you’re referring to? Do you mean the white strip that appears under the navigation menu: “Home | MENUS | EVENTS | CONTACT | Our Café”

hello, thanks for answering,
no, I mean the one above the main body. It looks about 20px tall.
I think it’s related to the page title

but the one under the menu should really be gone too…it’s not very complementary to the rest of the design!

if it helps, this is the stylesheet for the Aletheia child theme that I’m using`#main-header {
background-position: 0 0;
width: auto;
min-height: 1000px;
text-align: center;
text-shadow: 0 0 5px rgba(0, 0, 0, 0.75);!important;
}
#main-header {background-repeat: no-repeat;}
#main-header .site-branding {
min-height: 0;
padding: 440px 0;
}
#content {
margin-top: -140px;
}

.landing-page .page-title {
margin-top: 150px;
}

#primary,
#secondary {
margin: 30px 0;
padding: 0 30px;
}

#primary {
padding-right: 0;
}
#primary article {
margin-bottom: 45px;
}
#primary article .entry-thumbnail {
margin: 0;
padding: 0;
}
#primary article header {
margin: 0;
padding: 20px 10px 20px 20px;
}
#primary article .entry-content,
#primary article .entry-summary {
padding: 20px;
}
#primary article footer {
padding: 20px;
}

#secondary .widget {
margin-bottom: 45px;
padding: 0 20px 20px;
}
#secondary .widget .widget-title {
padding: 10px 0;
}
#secondary .widget .widget-title + .separator {
margin-left: -20px;
margin-right: -20px;
}
#breadcrumbs,
.page-header,
.navigation.post-navigation,
#comments {
margin-bottom: 45px;
padding: 15px 20px;
}
#secondary .widget .widget-title,
#footer .widget .widget-title {
padding-left: 0;
padding-right: 0;
}

.btn {
border-radius: 2px;
}
#back-to-top .btn {
border-radius: 0;
}

@media screen and (max-width: 782px) {
#primary {
padding-right: 30px;
}
}
`

Is this the box you’re referring to: https://imgur.com/hA7NarX?

If not, can you take a screenshot of the box in question and post it to someplace like Imgur?

yes thats the box

In your child theme’s stylesheet, try:

#breadcrumbs {
display: none;
}

firebug shows it-s html to be
<ol class="breadcrumb" id="breadcrumbs"><li class="home"><a href="https://pandoraslunchbox.eu"></a></li><li class="active">Home</li></ol>

and I think it’s css is

@charset "UTF-8";
*, *:before, *:after {
    box-sizing: border-box;
}
.wp-caption {
    border: medium none;
    max-width: 100%;
    padding: 0;

THANK YOU :)!

free coffee at a UK festival for you next summer!