4.7.0 to 4.7.1 themes break?

I was wondering if anyone else has had some problems with their theme breaking when upgrading to version 4.7.1 from 4.7.0?
In particular, it doesn't seem to recognize this block within my styles.css :

.links {
text-align: right;
border-top: 1px dashed #154ead;
border-bottom: 5px;
padding-top: 5px;
padding-right: 15px;
}

Any suggestions?