Make Slack.com suck less on Windows

userContent.css

/*
 * Put this file at the following location, then restart FireFox:
 *     C:\Users\????????\AppData\Roaming\Mozilla\Firefox\Profiles\????????.default\chrome\userContent.css
 * See this article for an explanation:
 *     http://ffeathers.wordpress.com/2013/03/10/how-to-override-css-stylesheets-in-firefox/
 */

@-moz-document domain(slack.com)
{
	* {
		font-family: Arial,sans-serif !important;
	}
	.loading #loading-zone {
		background-image: url(data:image/png;base64,) !important;
	}
	#loading_welcome_msg {
		visibility: hidden !important;
	}
	.channel_header_button {
		border: 0px !important;
		border-radius: 6px !important;
	}
	.search_input {
		border-radius: 6px !important;
	}
	a.mpim_name, a.group_name, .channel_name, .im_name, .overflow_ellipsis, .hoverable {
		opacity: 1.0 !important;
		text-transform: capitalize !important;
	}
	.message_sender {
		text-transform: capitalize !important;
		font-weight: bold !important;
		color: #2c2d30 !important;
	}
	.message_sender > a {
		text-transform: capitalize !important;
		font-weight: bold !important;
		color: #4183c4 !important;
	}
}