Forumlar / Cotonti / Support / Where is the message.tpl styled?

Do you have the following in your stylesheet?

.jqmWindow {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    overflow: auto;
    background-color: #EEE;
    color: #333;
    border: 3px solid white;
    padding: 7px;
    text-align: center;
    z-index: 9999;
}

.jqmWindow h4 {
	border-bottom: 1px dotted #b0c4de;
	font-size: 14px;
	margin: 0 0 7px 0;
	padding: 0 0 5px 0;
	text-align: left;
	color: #3E606F;
}

.jqmWindow p{
	text-align: right;
	margin: 15px 0 0 0;
	font-size: x-small;
	text-transform: lowercase;
}

.jqmOverlay { background-color: #000; }

/* Background iframe styling for IE6. Prevents ActiveX bleed-through (<select> form elements, etc.) */
* iframe.jqm {
	position:absolute;
	top:0;
	left:0;
	z-index:-1;
	width: expression(this.parentNode.offsetWidth+'px');
	height: expression(this.parentNode.offsetHeight+'px');
}

/* Fixed posistioning emulation for IE6
     Star selector used to hide definition from browsers other than IE6
     For valid CSS, use a conditional include instead */
* html .jqmWindow {
     position: absolute;
     top: expression((document.documentElement.scrollTop || document.body.scrollTop) + Math.round(17 * (document.documentElement.offsetHeight || document.body.clientHeight) / 100) + 'px');
}