I have a div with a class called "wrapper'. When i try to add a background image to it in css it does not show, but the image shows up when i add it to the body.

```html
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width-device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Login Page</title>
        <link rel="stylesheet" href="Custom.css">

        <style>
            .wrapper{
                width: 100%;
                height: 100%;
                background-image: url(login-register.jpg);
            }
        </style>
    </head>
    <body>
        <div class="wrapper"></div>
    </body>
</html>

```