Background-image for horizontalLayout

I want to set background image for layout. I have tried using css but it’s not showing. Please assist

Please show what you’ve tried so far

.login-landing {
background-image: url(“frontend/landing.png”);
@import url(‘./views/login-landing.css’);

Or directly in the code

getStyle().set("background-image", " url('images/empty-plant.png')");

Thanks. I tried this but it didn’t appear still

Thank you @adaptable-uakari It works perfectly now.