Get header the same size that container

Hi,
I personally do not like when the width of the header is set to the full screen width, and prefer it will be the same width as the container.
I have tweaked the child theme style.css with the following :

@media (min-width:1200px){
.tc-header{width:1200px;margin:auto}
}
@media (min-width:940px) and (max-width:1199px){
.tc-header{width:940px;margin:auto}
}

No need to modify the width for other media sizes, since then container is fit to the screen width.
Hope it helps