Problems with GeoGebra and Safari
At my work we have a problem with Safari and GeoGebra.
The developers have encountered a browser support problem when using Geogebra within iframes.
The problem is that the applet_scaler does not have the transform and transform-origin styles in browsers that require prefixed transforms (at least not the ones we have tried). When we try with prefixed transforms in e.g. Safari 7.1 or 8.0 (-webkit-transform and -webkit-transform-origin) it works, but not without.