The following code will add the classes img-ratio-square, img-ratio-lt-square or img-ratio-gt-square to every image that’s printed using wp_get_attachment_image() <?php add_filter(‘wp_get_attachment_image_attributes’, function ($attr, $attachment, $size) {…

The following code inlines svg-code in a way that every current browser (including IE 10) will display it correctly. Once…

.el { animation: rotating 1s infinite linear; } @keyframes rotating { from {transform:rotate(0deg);} to {transform:rotate(360deg);} }