Change background color of group

Dashboard
7

@ukmoose This is the code I am using. It is in a template node and "Added to site section" is selected

<style>
    #Small_Screen_Group_2 {
        font-size: 30px !important;
        background-color: "#FF0000" !important;
    }
</style>

Below is the dashboard. As you can see, the text is larger than the deault.

Small