How do I remove the gray border that surrounds background images?

I've come across an interesting problem in the following line of code:

  <img style="background-image:url(Resources/bar.png); width: 300px; height: 50px;"/>

In Safari (at least), a gray border surrounds the 300x50px area. Adding style="border: none;" doesn't remove it. Any ideas?

Thanks. Mike

Solution 1:

So, you have an img element that doesn't have a src attribute, but it does have a background-image style applied.

I'd say that the gray border is the 'placeholder' for where the image would be, if you'd specified a src attribute.

If you don't want a 'foreground' image, then don't use an img tag - you've already stated that changing to a div solves the problem, why not go with that solution?

Solution 2:

You can also add a blank image as a place holder:

img.src='data:image/png;base64,R0lGODlhFAAUAIAAAP///wAAACH5BAEAAAAALAAAAAAUABQAAAIRhI+py+0Po5y02ouz3rz7rxUAOw=='

This should do the trick!

Solution 3:

Actually, this seems to work at least on Chrome:

img {
 content: "";
}

Solution 4:

The following will use css to set the src to a tiny transparent image which solves the src attribute issue while maintaining control from image:

content:url('data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7')

My overall approach is to define the following in my reset.css, then use a class to provide the actual image and control it. This behaves just like an img, but is entirely css controlled.

img {
  display: -moz-inline-box;
  -moz-box-orient: vertical;
  display: inline-block;
  *display: inline;
  vertical-align: middle;
  *
  vertical-align: auto;
  font: 0/0 serif;
  text-shadow: none;
  color: transparent;
  background-size: contain;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  box-sizing: border-box;
}

img:not([src]) {
    content:             url('data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7');
}

.myuniqueimage {
    background-image: url('../images/foobar.png');
    height: 240px;
}

Thanks to +programming_historian and +binnyb for the data:image tip