body {
    background-image: url("../img/fon.jpg");
    background-size: cover;
}
.top {
    margin-left: 50px;
    margin-right: 50px;
}
.logo {
    display: block;
    height: 250px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 50px;
    margin-bottom: 50px;
}
.title {
    padding-top: 20px;
    font-size: 60px;
    font-family: Arial, sans-serif;
    font-weight: bold;
    color: #272727;
}
.subtitle {
    margin-top: 10px;
    font-size: 35px;
    font-family: Arial, sans-serif;
    color: #272727;
}
.form {
    margin-top: 100px;
}
.form input{
    margin-left: 50px;
    width: 75%;
    height: 80px;
    margin-bottom: 60px;
    font-size: 45px;
    border-radius: 10px;
}
.form input:invalid {
    border: 2px solid red;
}
.form button {
    display: block;
    margin-left: 100px;
    margin-right: 100px;
    margin-top: 100px;
    width: 250px;
    height: 80px;
    background-color: #1ea921;
    color:aliceblue;
    font-size: 40px;
    font-weight: bold;
    border:0;
    border-radius: 10px;
}
.form .formspam {
    margin-left: 80px;
    font-size: 35px;
    font-family: Arial, sans-serif;
}
.form .prim{
    margin:25px;
    font-size: 30px;
}
.fon_carta {
    border: 0;
    width: 100%;
    z-index: 1;
}
.cod_carta {
    width: 600px;
    position: absolute;
    z-index: 99;
    top: 850px;
    left: 20%;
}
#screen {
    margin-left: 40px;
    margin-right: 40px;
    margin-top: 40px;
    font-size: 50px;
    font-family: Arial, sans-serif;
}