What is the best way to resize a background image to perfectly fit the visible screen on a mobile device?

When accessing the website on a mobile device, the background image adjusts based on the amount of content on the page. It expands when there is more content and shrinks when there is less. For instance, opening the navigation panel on a mobile device causes the background to dramatically increase as more content is revealed. How can we make the background size independent of the content and solely dependent on the viewing area?

Current CSS and HTML implementation:

<body class="bg-image1">
body {  
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    margin: 0;
    padding: 0;

    height: 100%;
    min-height: 100%;
}
.bg-image1 {  
        background-image: url(path); 
}

Answer №1

.bg-image1 {  
    background-image: url(путь); 
    height: 100vh; /* may require !important */
    width: 100vw; /* may require !important */
}

vw and vh are shorthand for viewport width and viewport height respectively. This means the image will be resized to fit the dimensions of the browser window. Keep in mind that if the keyboard appears for user interaction while the image is displayed on a mobile device, the viewport height and the image's height will change accordingly.

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