Blockquote background not displaying on IE11

I know why it doesn't render on IE11. If you hire me, I will tell you the reason why and would tell you how to fix it.

Hello, I have great experience in wordpress and php and can do any fixing ,editing ,customization related to these skills very well. I am waiting for your response. Thanks, Ravinder

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Handfull of experiance in css /html. Working with webapplications and wordpress sites for more than 8 years