Fixed Header - Foster template

Hi, I am using this code to make the header fixed in the foster template, but I am having issues with the navigation bar being placed over the top of the logo and the length of the header is too long and obscures the content on the pages I.E. - about, contact, retailers. See the reference images for how it looks vs. how I want it to be.

Could use some guidance on what CSS I need to add. Thank you

www.sandwichceramic.com/home

.Header {
	position: fixed! important;
	z-index: 1000;
	width: 100%;
	top: 0;
}

Remove your code and use this code to Fixed header

header.Header.Header--bottom {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
}

not related, like images on your site home. 😂