Background code does not with whmcs 8

[techwthquestion]

Hello

For email template I want to set banner in the background but I noticed that with whmcs 8 version, background code in the html template does not work. 

is there any way to fix this issue? 

[brian!]

3 hours ago, techwthquestion said:

For email template I want to set banner in the background but I noticed that with whmcs 8 version, background code in the html template does not work. 

what are you trying ?

[techwthquestion]

On 1/19/2021 at 11:47 PM, brian! said:

what are you trying ?

I have set below lines in the whmcs >> Global Email CSS Styling  >>

.template-logo{width:110px;height:auto}
#banner-area{background:url('https://whmcs.com/wp-content/uploads/2019/08/newsletter-banner.jpg');background-size:cover;font-size:12px;color:#fff}
.banner-txt{text-align:center;color:#fff;font-size:30px;line-height:36px;margin-top:0;margin-bottom:0;font-weight:400}
.primary-btn{line-height:12px;color:#fff;text-decoration:none;padding:16px 26px;border:solid 2px #fff;display:block;text-transform:uppercase;letter-spacing:1px}
.footer-section{background:url('https://whmcs.com/wp-content/uploads/2019/08/newsletter-banner.jpg');background-size:cover;color:#fff;font-size:12px;}
.footer-heading{text-align:left;color:#fff;font-size:30px;line-height:36px;margin-top:0;margin-bottom:0;font-weight:300}

Client Email Header Content >>
<style type="text/css">
[EmailCSS]
</style>

But when I sent email I am getting header like this : https://snipboard.io/FXrx8D.jpg