Responsive WordPress Images

WordPress has a few default classes used for things like image alignment, galleries and other html output by core features. This is a combination of the styles found in the default WordPress TwentyEleven theme, and some modifications of my own. Include this snippet with your css to save a bunch of time building your responsive WordPress theme.

I’ll continue to update this Gist as needed for my own use. Feel free to fork it.

<pre>/**
 * Responsive WordPress Core Theme Styles
 * http://jeffsebring.com/responsive-wordpress-images/
--------------------------------------------------- */

.sticky,
.bypostauthor,
.gallery-caption {
   display: normal;
}

.alignnone {
   margin: 1em 1em 1em 0;
}

.aligncenter,
div.aligncenter {
   display:block;
   margin: .5em auto;
}

.alignright {
   float:right;
   margin: 0 0 1em 1em;
}

.alignleft {
   float:left;
   margin: 0 1em 1em 0;
}

.aligncenter {
   display: block;
   margin: 1em auto;
}

img,
img[class*="align"],
img[class*="wp-image-"] {
   max-width: 100%;
   height: auto;
}

img.wp-smiley {
   border: none;
   margin-bottom: 0;
   margin-top: 0;
   padding: 0;
}

img.alignright {
   margin-left: 1em 0 1em 1em;
}

img.alignleft {
   margin: 1em 1em 1em 0;
}

img.aligncenter{
   display: block;
   margin: 1em auto;
}

img#wpstats {
   display: block;
   margin: 0 auto;
}

img[class*="align"],
img[class*="wp-image-"],
   .gallery .gallery-icon img {
   border: none;
}

.wp-caption {
   margin-bottom: 1em;
   margin-left: 0;
   max-width: 96%;
   text-align: center;
}

.wp-caption img {
   display: block;
   margin: 0 auto;
}

.wp-caption-text {
   position: relative;
   font-size: .8em;
}

.gallery {
   margin: 0 auto;
}

.gallery .gallery-item  {
   margin: 0;
   float: left;
   text-align: center;
   width: 33%;
}

.gallery a img {
   border: none;
}

.gallery-columns-4 .gallery-item {
   width: 25%;
}

.gallery-columns-4 .gallery-item img {
   width: 100%;
   height: auto;
}

.comments ol    {
   padding-left: 0;
}

.comments ol li {
   margin: 0;
}

.comment-author {
   padding: 0;
   text-decoration: none;
}

@media only screen and (max-width: 800px) {

   embed,
   object {
      max-width: 100%;
   }

}

@media only screen and ( max-width: 650px ) {

   .gallery-columns-3 .gallery-item {
      width: 33.33%;
   }

   .gallery-columns-3 .gallery-item img {
      width: 100%;
      height: auto;
   }

}

@media only screen and (max-width: 480px) {

   .gallery-columns-2 .gallery-item {
      width: 50%;
   }

   .gallery-columns-2 .gallery-item img {
      width: 100%;
      height: auto;
   }

}</pre>

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