Unable to load https websites on safari
Safari 6/OS X doesn't support TLSv1.2. Sites only supporting the TLSv1.2 protocol like biblio.lu won't work in Safari 6.

You can cross-check/compare your browser's result at SSL Client Test
with the SSL Server Test (e.g. SSL Server Test testing biblio.lu).

No supported protocols overlap between Safari 6.1.6/Mac OS X 10.7.5:



and biblio.lu



so no https access! Google Chrome 49.0.2623.112 (64-bit) - the last Google Chrome version supporting 10.6/10.7/10.8 works though.