@Matt: The spaces in Promotion are top and bottom is controlled through padding-top and padding-bottom, so you can adjust the padding as per your need in the following css and then add it in “Appearance => Theme Options => Custom CSS” box:
#homepage-message {
padding-top: 30px;
padding-bottom: 30px;
}
To make the promotion area, one column and text align center, you can add the following css in “Appearance => Theme Options => Custom CSS” box:
#homepage-message .left-section,
#homepage-message .right-section {
text-align: center;
width: 100%;
}
#homepage-message .right-section a {
display: inline-block;
}