Covering Header

Hi Louise,
So unfortunately due to your theme we’re going to have to change the size of the simple banner and/or change the background color to more opaque.
For opaque changes add this to the custom css:

background: rgba(2, 73, 133, 0.5);

Change the last number(0.5) lower or higher, values between 0 and 1, for more or less opaque.
To change the size put the following in the custom css:

height: 25px;
.simple-banner-text {
    font-size: 12px;
    padding: 0px;
}

Adjust any one of those numbers to change sizing to your liking. Hopefully this works well enough for you.