.contact_form h2 {
    background: none repeat scroll 0 0 #F3F3F3;
    border-radius: 5px;
    color: #5CD053;
    display: block;
    font-family: sans-serif;
    font-size: 20px;
    padding: 5px;
    text-shadow: 1px 1px 1px #CCCCCC;
    width: 600px;
}
.contact_form.contact_form  label.error_msg {
    background: none repeat scroll 0 0 #F3F3F3;
    border-radius: 5px;
    color: #FF0000;
    display: block;
    font-family: sans-serif;
    font-size: 15;
    padding: 10px;
    text-shadow: 1px 1px 1px #CCCCCC;
    width: 600px;
}
.contact_form.contact_form  label.ok_msg {
    background: none repeat scroll 0 0 #F3F3F3;
    border-radius: 5px;
    color: #5CD053;
    display: block;
    font-family: sans-serif;
    font-size: 15;
    padding: 10px;
    text-shadow: 1px 1px 1px #CCCCCC;
    width: 600px;
}
/*--- estilos para los ul y li del formulario ---*/
.contact_form ul {
    width:750px;
    list-style-type:none;
	margin:0px;
	padding:0px;
}
.contact_form li{
	padding:12px; 
	border-bottom:1px solid #eee;
	position:relative;
}
.contact_form label {
    color: #555555;
    display: inline-block;
    //float: left;
    font-family: sans-serif;
    font-size: 13px;
    font-weight: bold;
    margin-top: 3px;
    margin-left: 20px;
    margin-right: 20px;
    padding: 3px;
    width: 75px;
}
.contact_form input {
	height:20px; 
	width:175px; 
	padding:5px 8px;
}
.contact_form textarea {
	padding:8px; 
	width:300px;
}
.contact_form button {
    margin-top: 3px;
    margin-left: 20px;
    margin-right: 20px;
}
/*----- estilos visuales de los elementos --------*/
.contact_form input, .contact_form textarea { 
	border:1px solid #aaa;
	box-shadow: 0px 0px 3px #ccc, 0 10px 15px #eee inset;
	border-radius:2px;
	color: #888;
	font-size: 12px;
	padding-right:20px;
	-moz-transition: padding .25s; 
	-webkit-transition: padding .25s; 
	-o-transition: padding .25s;
	transition: padding .25s;
}
.contact_form input:focus, .contact_form textarea:focus {
	background: #fff; 
	border:1px solid #555; 
	box-shadow: 0 0 3px #aaa; 
	padding-right:70px;
}
.icon img {
	width: 20px;
	height: 20px;
}
/* === Estilos de Validacion === */	

.contact_form input:required:valid, .contact_form textarea:required:valid {
	box-shadow: 0 0 5px #5cd053;
	border-color: #28921f;
}
.contact_form input:focus:invalid, .contact_form textarea:focus:invalid {
	box-shadow: 0 0 5px #d45252;
	border-color: #b03535
		
}


/* === Estilos del boton de Envio === */
button.submit {
    padding: 8px 15px;
   font-family: Helvetica, Arial, sans-serif;
   font-weight: bold;
   line-height: 1;
   color: #444;
   border: none;
   text-shadow: 0 1px 1px rgba(255, 255, 255, 0.85);
   background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#fff), to(#bbb));
   background-image: -moz-linear-gradient(0% 100% 90deg, #BBBBBB, #FFFFFF);
   background-color: #fff;
   border: 1px solid #f1f1f1;
   border-radius: 10px;
   box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}
button.submit:hover {
	opacity:.55;
	cursor: pointer; 
	color: #fff;
}
button.submit:active {
	border: 1px solid #222;
	box-shadow: 0 0 10px 5px #444 inset; 
}
section {
    width: 60%;
    display: inline-block;
    vertical-align: top;
}

aside {
    width: 15%;
    display: inline-block;
    margin-left: 15%;
    vertical-align: top;
}

.usuarios_botones ul {
    width:150px;
    list-style-type:none;
        margin:20px;
        padding:0px;
}
.usuarios_botones li{
        padding:12px;
        border-bottom:1px solid #eee;
        position:relative;
}
label {padding-top:20px;}
input[type=checkbox] {display:none ;}
input[type=checkbox]:checked +label:after {padding:5px 10px; background:green; border-radius:2px; color:#fff; content:'Si'; transition-duration:1s;}
input[type=checkbox] +label:after {padding:5px 10px; background:red; border-radius:2px; color:#fff; content:'No'; transition-duration:1s;}