.contact_form h2 {
    background: none repeat scroll 0 0 #F3F3F3;
    border-radius: 5px;
    color: #6B8E23;
    display: block;
    font-family: sans-serif;
    font-size: 20px;
    padding: 5px;
    text-shadow: 1px 1px 1px #CCCCCC;
    width: 95%;  /*--- anchura del espacio para la etiqueta h2 ---*/
    margin: 0 auto;
}
/*--- estilos para los ul y li del formulario ---*/
.contact_form ul {
    width:85%;  /*--- anchura del formulario ---*/
    list-style-type:none;
    margin: 0 auto;
	/*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: 18px;
    font-weight: bold;
    margin-top: 3px;

    padding: 3px;
    width: 90px;
}
.contact_form input {
	height:20px; 
	width:80%;  /*--- ancho de los campos de entrada de datos (input) del formulario ---*/
	padding:5px 8px;
}
.contact_form textarea {
	padding:8px; 
	width:80%;  /*--- ancho del campo de entrada de datos del mensaje (textarea) del formulario ---*/
}
.contact_form button {
	margin-left:90px;
}

/*----- 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: 18px;
	padding-right:30px;
	-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:80px;
}

/* === 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: 9px 17px;
   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; 
}