Styling option for Home Page

I want to extend the "Home Page Bottom Section Heading" sot hat my txt will fit in the ribbon box. How can I do this?

 

also, How do I center my background image?

 

Hello,

The ribbon is the image below the slider, you can't add more text outside the ribbon, it won't look great. And you can make the background image stretched which will show in the entire page.
Put the following code in custom css

Appearance -> theme options -> styling options -> custom css

Code:

html {
    background: url(images/bg.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

Add the address of your image
This will solve your problem.

Thanks.