::-webkit-input-placeholder {color: #FFF;}/* WebKit, Blink, Edge */
:-moz-placeholder {color: #FFF; }/* Mozilla Firefox 4 to 18 */
::-moz-placeholder {color: #FFF;}/* Mozilla Firefox 19+ */
:-ms-input-placeholder {color: #FFF;}/* Internet Explorer 10-11 */
::-ms-input-placeholder {color: #FFF;} /* Microsoft Edge */

.campo_form_newsletter {
	float: left;
	clear: none;
	width: 66%;
	height: 36px;
	background: #2B2B2B;
	border: 1px solid #FFF;
	border-right: 0;
	padding-left: 2%;
	font-family: "WorkSans-Medium";
	color: #FFF;
	font-size: 13px;
}

.campo_form_newsletter:valid {background: #2B2B2B;}
.campo_form_newsletter:invalid {background: #2B2B2B;}

.bt_form_newsletter {	
	float: left;
	clear: none;
	width: 30%;
	height: 40px;
	font-family: "WorkSans-Medium"; 
	text-transform: uppercase;	
	color: #FFF;
	font-size: 15px;
	text-align: center;
	background: #20C17A;
	border: 1px solid #FFF;
	transition: background .5s ease;	
}

.bt_form_newsletter:hover {
	background: #EDCA35;
	color: #FFF;
}