PPG-category-styling-plugin-free for WordPress

/*
Plugin Name: www.preprogrammer.com plugin
Description: Plugin created www.preprogrammer.com
Author: Jinto Antony
Email: jinto1729@gmail.com
*/

//CSS for Tags modification

.tagbox {
background-color:#eee;
border: 1px solid #ccc;
margin:0px 10px 10px 0px;
line-height: 200%;
padding:2px 0 2px 2px;

}
.taglink {
padding:2px;
}

.tagbox a, .tagbox a:visited, .tagbox a:active {
text-decoration:none;
}

.tagcount {
background-color:green;
color:white;
position: relative;
padding:2px;
}

Just copy paste the above code to your Custom CSS page and activated the plugin.
To style further more edit the styling code.