Browser SupportChrome 4.0+, Firefox 2.0+, Safari 1.1+ including all versions of Safari on iOS support flexbox using the July 2009 working draft syntax. These browsers require prefixed flexbox property names. Chrome and Safari 3.0+ (including iOS) require the -webkit- prefix, Firefox requires the -moz- prefix, and Safari 1.1 and 2.0 require the -khtml- prefix. Internet Explorer 10 supports flexbox