Adjustable backdrop with CSS

How can I create a resizable dynamic background image in CSS that adapts to the size of the browser window?

#mainPage {
    width: 100%;
    height: 100%;
    font-size: 3vw;
    text-transform: uppercase;
    background: black;
    font-weight: bold;
    position: fixed;
    background-image: url('imagesfolder/someImage.jpg');
}

I have tried placing the image directly in the html page, but it ends up being treated as inline and causes placement issues with other elements. My goal is to have an image that resizes with the browser window, while also having divs containing text on top of the image that scale accordingly. I am more familiar with absolute positioning rather than responsive layouts, so any help would be appreciated.

htmlcss

Answer №1

attempt:

#homePage {
    width: 100%;
    height: 100%;
    font-size: 3vw;
    text-transform: uppercase;
    background: black;
    font-weight: bold;
    position: fixed;
    background-image: url('imagesfolder/anotherImage.jpg');
    background-size: cover;
    background-position: center center;
}

Answer №2

To achieve the desired effect, focus on the background-size property. By setting it to cover, your image will consistently cover its designated container.

Be aware that this feature is not compatible with IE8 and earlier versions.

For further details and alternative values, visit: https://developer.mozilla.org/en-US/docs/Web/CSS/background-size

Answer №3

Utilize the following CSS property for responsive background images: 

background-size: cover;

Alternatively, you can use this: 

background-size: 100% 100%;

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