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Contributor I
Nov 13, 2026 3:43 PM UTC
Question

Signup form background width not applying to the wrapper

Hi all,

I am trying to give a custom signup form a full-width background while the form itself stays centered, but the background only covers the form column. I used the wrapper CSS below in a custom HTML block.

signupwidthprobe2

.klaviyo-form-container { width: 100vw; margin-left: calc(-50vw + 50%); background: #f0f5fa; }

Does the parent section need a width set as well?

Thanks!