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In order to get rid of the vertical line between the WelcomeImage and the ContentArea, set the WizardElement.WelcomeImageElement.BorderWidth property to 0.
.radWizard1.WizardElement.WelcomeImageElement.BorderWidth = 0;
I am not sure that understand your second question, so please send an image demonstrating the issue and what you want to achieve.
Thank you in advance.
Looking forward to your reply.
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