Really Full Css no img for login form's input?

Is css code below without image?

#inputs input { /* pictos des inputs */
    background: #f1f1f1 url(data:image/png;base64,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) no-repeat;
    padding: 15px 15px 15px 30px;
    margin: 0 0 10px 5px;
    width: 85%;
    border: 1px solid #ccc;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
    -moz-box-shadow: 0 1px 1px #525252 inset, 0 1px 0 #6A6A6A;
    -webkit-box-shadow: 0 1px 1px #525252 inset, 0 1px 0 #6A6A6A;
    box-shadow: 0 1px 1px #525252 inset, 0 1px 0 #6A6A6A;

I’m not quite sure what you’re asking. Can you clarify?

Are you asking about removing the encoded image?

That base64 data png is responsible for the “person” and “key” symbols

You can read up on data-uri’s here if you are unfamiliar with them.

Yes. May I know where are the image urls? Are the images store somewhere?

You need to read the article Paul linked to, which will explain. The actual image is encoded in that very long data string. (I’d never heard of this approach before, either. :))

It save http request but how about cache? Will it same speed with caching?

There are performance issues with mobile browsers and it would seem from this research that data-uris are best avoided although there are some use cases for them. Use sprites if you are optimising your site for best performance.