body {
    position: fixed;
    width: 100%;
    background-image: url("../image/back.webp");
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

img{
    width: 100%; /* or max-width: 100%; */
    height: auto;
}

.carta {
    position: relative;
    box-sizing: border-box;
    background: #fff;
    margin: 200px auto 3% auto;
    max-width: 37.5em;
    border-radius: 15px;
    padding: 0.5% 0.5% 1% 0.5%;
    border-style: outset;
    box-shadow: black 0px 15px 30px -10px;
}

.logo {
    margin: 10px 10px 10px 10px;
    width: 70px ;
    height: auto;
}

.header {
    background: #00E000;
    /* background: #41C112; */
    background: -moz-linear-gradient(top, #41C112 0%, #029b00 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #41C112), color-stop(100%, #029b00));
    background: -webkit-linear-gradient(top, #41C112 0%, #029b00 100%);
    background: -o-linear-gradient(top, #41C112 0%, #029b00 100%);
    background: -ms-linear-gradient(top, #41C112 0%, #029b00 100%);
    background: linear-gradient(to bottom, #41C112 0%, #029b00 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#41C112', endColorstr='#029b00', GradientType=0);
    border-radius: 12px 12px 0 0;
    height: 95px;
    position: relative;
    margin-bottom: 20px;
}

.row:after {
    content: "";
    display: table;
    clear: both;
}

#titolo {
    margin: 0 0 0 100px;
    position: absolute;
    bottom: 35px;
    color: #fff;
    font-weight: normal;
    font-size: 25px;
}

#sottotitolo {
    margin: 0 0 0 100px;
    position: absolute;
    bottom: 15px;
    color: #fff;
    font-weight: normal;
    font-size: 15px;
}


.alert {
    width: 50%;
    padding: 20px;
    background-color: #f44336;
    color: white;
    opacity: 1;
    transition: opacity 0.6s;
    margin-bottom: 15px;
}

.alert.success {background-color: #04AA6D;}
.alert.warning {background-color: #f44336;}

.closebtn {
    margin-left: 15px;
    color: white;
    font-weight: bold;
    float: right;
    font-size: 22px;
    line-height: 20px;
    cursor: pointer;
    transition: 0.3s;
}

.closebtn:hover {
    color: black;
}