Adjusting the height of a DIV element to suit the window dimensions

I am facing an issue with the following HTML code:

<div id="subpageHeaderImageSection">
    <div id="subpageHeaderLeft">
        <span id="holdImageP"></span>
            <!--[if lte IE 10]><img id="igm" src="theImages/subpageHeaderImageP.png" /><![endif]-->
    </div>
</div>

It displays an image on my page as a header, but when the browser is stretched, only the width changes and not the height.

For example, on a normal display monitor, the image fits fine inside the DIV:

However, stretching the browser causes the image to expand in width but not in height:

The CSS used is as follows:

#subpageHeaderImageSection {
    position: relative;
    top: 0;
    width: 100%;
    height: 400px;
}
#subpageHeaderLeft {
    position: absolute;
    width: 100%;
    height: 100%;
}
#holdImageP {
    position: absolute;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../theImages/subpageHeaderImageP.png') no-repeat;
    background-size: 100% 100%;
}

Is there a way to use JQuery or CSS to dynamically adjust the height based on the width of the DIV so that the image doesn't appear stretched on some screens?

Answer №1

  1. Setting a specific height on an image will keep it at that height, no matter how the browser is resized.

  2. When you specify a height for a "container" or element that surrounds your image, the image will be constrained to those dimensions (for the most part).

If you want the image to resize, you'll need to remove the height: 400px.

Keep in mind that the image will only expand up to its natural size. If an image is 200px high and wide, it won't get any bigger without altering the picture itself.

If you absolutely need the image to have a minimum height of 400px, consider using:

image{
  min-height: 400px;
}

This sets the smallest possible height of the image to 400px.

To make the image grow dynamically with browser resizing, there are various methods available. You can explore this tutorial for more information: http://css-tricks.com/perfect-full-page-background-image/

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