I can use image as a background in my local computer (using CodeIgniter 4, PHP), but it didn’t work on ftp site. I tried all the way, but it’s useless :
</head>
....
<style>
.bkg {
background-image: url('../img/q.jpg');
}
</style>
</head>
<body class="bkg">
<p><a href="login" style="color: white;">Login</a></p>
</body>