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Responsive portrait images, Hows & Dont's?

Responsive portrait images, Hows & Dont's?


What I have:

I use WordPress, and I remove the width & height of my images with a script:

add_filter( 'post_thumbnail_html', 'remove_thumbnail_dimensions', 10 );
add_filter( 'image_send_to_editor', 'remove_thumbnail_dimensions', 10 );

function remove_thumbnail_dimensions( $html ) {
    $html = preg_replace( '/(width|height)=\"\d*\"\s/', "", $html );
    return $html;

And then I add a script, that puts my attachments into a div (just for styling purposes).

add_filter('image_send_to_editor', 'wrap_my_div', 10, 8);

function wrap_my_div($html, $id, $caption, $title, $align, $url, $size, $alt){
    return '
'; }

and then the CSS:

img {
        width: 100%;

.post-attachment {
    width: 80%;
    margin: 0 auto;

This works really great for landscape images & looks great on mobile. But how to keep images, that are in the portrait dimensions, not to scale to the width of the 100% container? I know, its kind of wierd, if I have declared the width:100% and I don't want some images to be 100% width, but rather 100% height.

If there isn't a CSS way, then may-be someone can suggest me any jquery plugins (or a WP plugin, though I don't want to use them)? Or some links to dig into?

Thank you.

Problem courtesy of: r1987


Instead of width, use max-width:

img {
    max-width: 100%;

That way they will be their original size if they are small, but if they are larger, they will keep within the boundaries of the enclosing parent.

Solution courtesy of: coopersita


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This post first appeared on CSS3 Recipes - The Solution To All Your Style Problems, please read the originial post: here

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Responsive portrait images, Hows & Dont's?


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