aeberly

I figured it out. Its was in main.css under assets>skins.

.site-header .site-branding .site-title {
border-radius: 4px;
display: inline-block;
padding: 10px 20px;
background: rgba(255, 255, 255, 0.6);
}
.site-header .site-branding .site-description {
display: inline-block;
font-size: 18px;
background: rgba(255, 255, 255, 0.6);
padding: 10px 20px;
border-radius: 4px;
}