Hey there,
Thank you for reaching out to us. Please replace this part of your code:
.x-header-landmark {
background-color: #ff551d;
text-align: center;
padding-bottom: 50px;
padding-top: 50px;
}
With this:
.x-header-landmark {
background-color: #ff551d;
text-align: center;
padding-bottom: 50px;
padding-top: 50px;
width: 100% !important;
max-width: 100% !important;
}
There was a container width applied on the header landmark, we just needed to make it full width by specifying width: 100% !important; max-width: 100% !important;
If you would like to learn CSS, I am sharing few resources that you take a look to get started with CSS and an interesting tool that you can use to speed up the development process.
I recommend you to watch following video that will help you to get started with CSS.
https://www.youtube.com/watch?v=MFR4WXiLzpc
Sometimes it can get a bit difficult to find out the right selector to be able to write the required CSS codes. A handy tool that can help you in this is Google Chrome dev tools. I am sharing the resource that you can refer to get started with dev tools.
https://developers.google.com/web/tools/chrome-devtools/css/
https://developers.google.com/web/tools/chrome-devtools/
https://www.youtube.com/watch?v=tP_kXBJWPhQ&t=200s
Cheers!