Yes. Granted, if any couple works out their problems, they'll be doing great. ;)
All 78 zodiac combinations can be successful. In this world we can find an example of each pair that ends in marriage or ends in divorce. With that said, it's best to know how the blueprint of these relationships work rather than consider compatibility.
Capricorn and Libra are going to feel like opposites. Capricorn and Libra both like to stay indoors and relax, except Capricorn mulls and hibernates. Capricorn is an ambitious earth sign that intends to provide for its family. Libra stays indoors because going out into society and the constant balance of it gives Libra a headache. Libra is all about balance. Libra does like the finer things, but can also be okay with practicality. Capricorn will be greatly attracted to Libra's charms, where Libra will see Capricorn as a solid rock.