Assuming you are using the J3.x/T3v2 version of JA Fubiz . . . . . . .
If you haven’t yet done so, create a new file called “custom.css” within file path –> /templates/ja_fubiz/css
Within that custom/css file, paste the following CSS rule:
.jamasshead .jamasshead-title {
font-family: 'novecento_widedemibold',sans-serif;
font-size: 150px;
font-weight: normal;
line-height: 1;
margin: 0;
text-indent: -13px;
word-spacing: -30px;
}
Modify the “font-size” property to whatever pixel value you wish.
You can, of course, modify other aspects of your slideshow headline text within this rule as well.
Hope That Helps