obraz tła CSS nie działa
.container {
background-image: url("img/rose.jpg");
height: 800px;
}
/* Check Path to image, in this case, its in a folder called img */
/* Check if you Linked your css File on your header, you Link it in the
Header like this <link rel="stylesheet" href="main.css"> */
/* Check if the Name of your Image is the same like how you saved it */
The Real One