I happen to have a credit karma account. I see https://www.creditkarma.com/myprofile/security uses a single-column flex container on `<body>` element, so Firefox should be able to print it correctly after bug 1622935 is fixed. youngjane1118, if it doesn't work for you, feel free to reopen this bug with more information. Thanks!
Bug 1421462 Comment 19 Edit History
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I happen to have a credit karma account. I see https://www.creditkarma.com/myprofile/security uses a single-line column flex container on `<body>` element, so Firefox should be able to print it correctly after bug 1622935 is fixed. youngjane1118, if it doesn't work for you, feel free to reopen this bug with more information. Thanks!