When Marketo's form prefill feature injects its <script> tag as the first child of the <head> tag, it confuses Internet Explorer's compatibility-mode detection and causes pages to be rendered in old IE modes (ex: IE7 emulation).
By default, please skip over both <meta charset> and <meta http-equiv="X-UA-Compatible"> to ensure proper cross-browser support.
See also:
Marketo, Internet Explorer, X-UA-Compatible, mktoPreFillFields
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