Here’s the updated CSS, using modern, web/mobile-friendly fonts that are widely supported across browsers and devices. I replaced older or less common fonts with system-native or Google-recommended web fonts. These fonts provide better legibility and performance:

- **Sans-serif replacement**: `system-ui, Arial, Helvetica, sans-serif`
- **Monospace replacement**: `monospace, Courier New, Consolas`
- **Serif replacement**: `Georgia, Times New Roman, serif`

```css
body {
	margin: 0;
	font-family: system-ui, Arial, Helvetica, sans-serif;
	font-size: 10px;
	text-align: left;
}

.lock {
	background-image: url(images/Angle_Type_Brass_Padlock.jpg);
	background-repeat: no-repeat;
	background-position: center center;
}

.logme {
	background-image: url(images/Red_Check.gif);
	background-repeat: no-repeat;
	background-position: left;
	font-size: 10px;
	font-weight: bold;
}

.remove {
	background-image: url(images/iconerror.gif);
	background-repeat: no-repeat;
	background-position: left;
	font-size: 12px;
	font-weight: bold;
	color: #F00;
}

.sort {
	background-image: url(images/253_32.jpg);
	background-repeat: no-repeat;
	background-position: left;
	font-size: 12px;
	font-weight: bold;
}

a:link {
	color: #0a7008;
	text-decoration: none;
}

a:visited {
	color: #FF0000;
	text-decoration: none;
}

a:hover {
	color: #000000;
	text-decoration: underline;
}

a:active {
	text-decoration: none;
	text-align: left;
	color: #D4EAFF;
}

.footer {
	text-transform: uppercase;
	background-position: center center;
	text-align: center;
	background-image: url(images/subnav_bg.gif);
	height: 35px;
	font-family: system-ui, Arial, Helvetica, sans-serif;
	font-weight: bold;
	font-size: 9px;
}

.footer2 {
	color: #050b7d;
	font-family: monospace, Courier New, Consolas;
}

#popitmenu {
	position: absolute;
	background-color: white;
	border: 1px solid #FFFFFF;
	font: normal 10px system-ui, Arial, Helvetica, sans-serif;
	line-height: 18px;
	z-index: 100;
	visibility: hidden;
	font-weight: bold;
}

#popitmenu a {
	text-decoration: none;
	padding-left: 6px;
	color: black;
	display: block;
	border-bottom: 1px solid #0055FF;
}

#popitmenu a:hover {
	background-color: #CCE6FF;
	border-bottom: 1px solid #0055FF;
	color: #0055FF;
}

#formId table tr td h3 {
	font-family: Georgia, Times New Roman, serif;
}

#formId table .footer2 td {
	font-family: monospace, Courier New, Consolas;
}

.font1 {
	color: #F00;
	font-family: system-ui, Arial, Helvetica, sans-serif;
}

.font2 {
	font-family: system-ui, Arial, Helvetica, sans-serif;
}

.style18 {
	color: #0080FF;
}

.style19 {
	font-size: 14px;
}

.red {
	color: #F00;
	font-family: system-ui, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-style: normal;
}

.fonter {
	color: #F00;
}

.instruction {
	color: #F00;
}

.instruction strong {
	font-size: 12px;
	color: #00F;
}

.font_size {
	font-size: 12px;
	font-weight: bold;
}

.style16 fieldset div legend {
	font-size: 14px;
	color: #020852;
}