zoneminder/web/css/overlay.css

.overlayMask {
	position: absolute;
	opacity: 0.6;
	filter: alpha(opacity=60);
	-ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=60);
	z-index: 999;
	background: #aaaaaa;
}

.overlay {
	display: none;
    position: absolute;
    background-color: #f0f0f0;
    border: 2px solid #555555;
    -moz-border-radius: 4px;
    z-index: 1000;
    overflow: hidden;
}

.overlayHeader {
    float: left;
    background-color: #853131;
    width: 100%;
    border-bottom: 1px solid #666666;
    color: black;
}

.overlayTitle {
    float: left;
    padding: 10px 6px;
    font-weight: bold;
    width: auto;
}

.overlayToolbar {
    float: right;
    font-weight: bold;
    padding: 6px 4px;
    width: auto;
}

.overlayBody {
    float: left;
    width: 100%;
}

.overlayContent {
    padding: 4px 4px 6px;
}