html, body{
    height: 100%;
    margin: 0;
}

body { 
    /* Relative path to the image in the project folder */ background-image: url('assets/carina_nebula~large.jpg'); 
    background-size: cover;           /* scale to cover the viewport */
    background-repeat: no-repeat;     /* prevent tiling */ 
    background-attachment: fixed;     /* keep image fixed while scrolling */ 
    background-position: center top;  /* center the image */ 
    min-height: 150vh;                /* ensure the page is scrollable */
    color: #fff; 
    font-family: Arial, sans-serif; 
}

.content {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 8px;
}
html {
    scroll-behavior: smooth;
}