Sprite does not change after new upload

Question

In my personal website, I use sprites to show the contact icons (ie. skype, email, etc).

Recently I needed to add a new icon in the sprite therefore I have made a new one (sprite) and uploaded it to my FTP folder.

Everything works great on localhost but it does not work in my hosted website.

• Localhost
• Hosted

As you can see, locahost picture has got the LinkedIn icon, which I wanted to add, but on the hosted website it's not there.

• Sprite Hosted Picture

CSS code:

.contact-aboutme, .contact-email, .contact-github, .contact-linkedin, .contact-skype, .contact-stackoverflow, .contact-twitter{
    background: url(../img/contacts-sprite.png) no-repeat;
}

.contact-aboutme{
    background-position: 0 0;
    width: 32px;
    height: 32px;
}

.contact-email{
    background-position: -34px 0;
    width: 32px;
    height: 32px;
}

.contact-github{
    background-position: -68px 0;
    width: 32px;
    height: 32px;
}

.contact-linkedin{
    background-position: -136px 0;
    width: 32px;
    height: 32px;
}

.contact-skype{
    background-position: -170px 0;
    width: 32px;
    height: 32px;
}

.contact-stackoverflow{
    background-position: -102px 0;
    width: 32px;
    height: 32px;
}

.contact-twitter{
    background-position: -204px 0;
    width: 32px;
    height: 32px;
}

.htaccess:

<IfModule mod_deflate.c>
    SetOutputFilter DEFLATE

    # Don’t compress
    SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
    SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary

    #Dealing with proxy servers
    <IfModule mod_headers.c>
        Header append Vary User-Agent
    </IfModule>
</IfModule>

Where's what I tried to do:

1. Changing/deleting the file name - the image remained there.
2. Downloaded the file from the FTP to my computer just to make sure I didn't fail at uploading it - it was correct.
3. Deleted the browser cache - it didn't work.
4. Tried refreshing both with F5 and CTRL+F5 - it didn't work.

I have no idea why this is happening.

I tried waiting as well like an hour or two, maybe it was a temporary issue but it didn't work.

Answer 1

Apparently it was browser issue with Firefox because it works with Google Chrome.

I thought about a cache problem immediatly when I saw it, even before trying Google Chrome, and I indeed deleted the cache of the browser, however the problem wasn't fixed.

There's really no other option except that it's a Firefox issue.