input[type="checkbox"]:after {
    border: 5px solid #2de82d;
    border-right: 0;
    border-top: 0;
    content: " ";
    display: block;
    height: 9px;
    left: 25%;
    opacity: 0;
    position: absolute;
    top: 30%;
    -webkit-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    transform: rotate(-45deg);
    width: 18px;
}



.Responsive div.Feedback_Message_Wrapper {
    margin-top: 35px;
}



.Imagem_background{
    position: absolute;
    overflow: hidden;
    background-repeat: no-repeat;
    background-position: center center;
    background-attachment: fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    background-color: black;
}