[sovit ranjitkar]

@Mowjee To make whole header looks like the banner background Go to Appearance -> Theme Option -> Design Option Tab -> Custom CSS and replace the below CSS code for #branding if you have already. If not just paste the below CSS code:

#branding {
    background-color: #27bdc9;
}

Now, Click on Save All Changes Button and Refresh your browser.

Thank you.