How can I add an image fallback to a class of CSS3 code?

Question

0.00/5 (No votes)

See more:

Hi all,

I have a loading spinner written in CSS, but I need to add the ability of a fallback animated GIF for browsers that do not support the CSS code. (I have already added some vendor prefixes too) I'm not sure where and how I would add any fallback code and what the code should ideally be. I have supplied a version of the CSS class below. Can anyone help?

Thanks!

----

.loading {
margin: 10% auto;
border-bottom: 11px solid #fff;
border-left: 11px solid #fff;
border-right: 11px solid #fff;
border-top: 11px solid #59AFDA;
border-radius: 100%;
height: 120px;
width: 120px;
-webkit-animation: spin 1.2s infinite linear;
-moz-animation: spin 1.2s infinite linear;
-ms-animation: spin 1.2s infinite linear;
-o-animation: spin 1.2s infinite linear;
animation: spin 1.2s infinite linear;
}

@keyframes "spin" {
from {
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-o-transform: rotate(0deg);
-ms-transform: rotate(0deg);
transform: rotate(0deg);
}
to {
-webkit-transform: rotate(359deg);
-moz-transform: rotate(359deg);
-o-transform: rotate(359deg);
-ms-transform: rotate(359deg);
transform: rotate(359deg);
}

}

@-moz-keyframes spin {
from {
-moz-transform: rotate(0deg);
transform: rotate(0deg);
}
to {
-moz-transform: rotate(359deg);
transform: rotate(359deg);
}

}

@-webkit-keyframes "spin" {
from {
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
}
to {
-webkit-transform: rotate(359deg);
transform: rotate(359deg);
}

}

@-ms-keyframes "spin" {
from {
-ms-transform: rotate(0deg);
transform: rotate(0deg);
}
to {
-ms-transform: rotate(359deg);
transform: rotate(359deg);
}

}

@-o-keyframes "spin" {
from {
-o-transform: rotate(0deg);
transform: rotate(0deg);
}
to {
-o-transform: rotate(359deg);
transform: rotate(359deg);
}

}

Posted 16-Jun-14 5:06am

Member 10887763

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Accepted Answer · 2014-06-16T05:26:00

The simplest solution would probably be to add Modernizr[^] to your site with the "CSS Animations" and "Add CSS Classes" options selected. This will add a "cssanimations" class to the HTML element in browsers which support CSS animations, which you can use to adapt your CSS:

CSS

.loading {
    ...
    background-image: url(loading-spinner.gif);
}
.cssanimations .loading {
    background-image: none;
    -webkit-animation: spin 1.2s infinite linear;
    -moz-animation: spin 1.2s infinite linear;
    -ms-animation: spin 1.2s infinite linear;
    -o-animation: spin 1.2s infinite linear;
    animation: spin 1.2s infinite linear;
}