Formato inicial del formulario CSS

Código CSS que le da un formato básico a los elementos de mi formulario CSS.

Nota: ver un formulario HTML de ejemplo.

/*
Hoja de estilos Formularios general
Última edición: 2006-08-XX
================================================*/

/* Estructura
================================================*/
* {
margin: 0;
padding: 0;
}
form {
position:relative;
overflow:hidden;
margin:0;
/*padding:.5em .5em .5em .5em;*/
}
form fieldset {
position:relative;
border-top: 1px solid #000000;
border-style: solid none none none;
padding: 1em;
}
form fieldset legend { font-size: 130%; padding: 0 .5em; }
form fieldset div {
position:relative;
overflow:hidden;
display: block;
width: 65%;
overflow:hidden;
}
form fieldset div label {
position:relative;
display: block;
float:left;
width:35%;
padding: 3px 5px;
margin: 0 .5em 0 0;
_margin: 0 .2em 0 0;
text-align: right;
}
/*form fieldset div.required label {
font-weight:bold;
}*/

* Campos
================================================*/
input, select, textarea {
padding: 0em .2em;
_padding-bottom: .05em;
width: 56%;
}
textarea { overflow: auto; }

/* Bloques radio, checkbox, etc.
================================================*/

/* contenedor derecho para listas de controles radio, checkbox, etc. */
form fieldset div div {
position:relative;
float:right;
margin: 0 .9em 0 0em;
_margin: 0 .7em 0 .2em;
width: 56.2%;
_width: 56.5%;
padding-top: .2em;
padding-bottom: .2em;
border:1px solid silver;
}
form fieldset div div label {
padding: .3em .1em;
_padding: .1em .1em;
float:left;
text-align:left;
width:90%;
}
form fieldset div div label input {
margin:0 .2em;
}
input.file {
margin:0;
padding:0;
width: 61%;
_width: 58.5%;
}
input.checkbox, input.radio {
display: inline;
width: 1.5em;
background-color: transparent;
border: none;
}
input.button {
float:none;
background-color: #D4D0C8;
font-family:Arial, Helvetica, sans-serif;
}

/* Ayuda
================================================*/
form fieldset div.notes {
position:relative;
float: right;
width: 27%;
margin: 0 0 1em 0em;
_margin-top:.2em;
padding: .5em .5em .5em .8em;
border: 1px solid #666666;
background-color: #ffffe1;
color: #666666;
}
form fieldset div.notes h4 {
background-image: url('../../images/icon_info.gif');
background-repeat: no-repeat;
background-position: left top;
border-bottom: 1px solid #666666;
margin-bottom: .5em;
font-size: 100%;
padding-left:27px;
padding-right:0;
padding-top:0;
padding-bottom:3px;
}

form fieldset div.notes p { font-size: 85%; }
form fieldset div.notes p.last { margin-bottom: 0em; }
form div small {
display: block;
margin-left: 39%;
margin-right: 3%;
padding: .1em .3em;
height: expression('1%');
font-size: 80%;
font-style:italic;
color: #666666;
}
form div small p{
font-style:italic;
color: #666666;
}
form div small a:visited {
color: #0033CC;
}
form div small a {
font-size:110%;
color: #0033CC;
}

* Submit
================================================*/
div.submit {
width:100%;
text-align:center;
margin-top:1em;
}
div.submit * {
margin: 0 .5em;
}

/* Validación de formulario
================================================*/
.required { background-color: #FFFFCC; }
.error { border: 2px solid #DDA3A3; }
.errFld { border: 2px solid #DDA3A3; }
.errorMsg { color: #CC3333; display: inline; }
.errMsg {
color: #CC3333;
display: block;
border:none;
margin-left: 25.5%;
margin-right: 3%;
padding: .1em .3em;
font-size:80%;
}