@media screen and (max-width: 640px) {
            body {
                background-image: url("mobile.png" )!important;
                background-repeat: no-repeat;
                background-size: 100vw 100vh !important;
            }
            
        }
        @media screen and (max-width: 640px){
            .header{
                display: flex;
                justify-content: center;
                align-items:center;
                margin-top: 120px;
            }
            .start{

                width: 250px;
                height: 250px;
                background-color: maroon;
                clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
                display: flex;
                justify-content: center;
                align-items: center;
                margin-left: 50px;
            }
            .pulsanteAvvio{
                width: 150px;
                height: 100px;
            }
        }

        @media screen and (min-width:700px) {
            

            .header{
                display: flex;
                justify-content: center;
                align-items:center;
                margin-top: 250px;
            }
             .user{
            display: flex;
            justify-content: center;
            align-items: center;
            }
            .start{

                width: 250px;
                height: 250px;
                background-color: maroon;
                clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
                display: flex;
                justify-content: center;
                align-items: center;
                margin-left: 870px;
            }
            
        }
        h2{
            font-size: 40px;
            background: -webkit-linear-gradient( grey,maroon, darkorange);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-style: oblique;
            font-weight: bold;
            text-align: center;
            text-shadow: 2px 2px 2px #000000; 
        }
        
        label{
            background: -webkit-linear-gradient(black,grey,yellow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: bold;
            text-shadow: 2px 2px 2px #000000; 
        }
        body {
            position: relative;
            background-image: url("Background.png");
            background-repeat: no-repeat;
            background-size: 100vw 100vh;

        }
        form{
            text-align: center;
           /* margin-top: 45px;*/
            height: 25px;
        }
        .message{
            height:25px;
            text-align: center;
            /*margin-left: 30px;*/
            font-weight: bold;
            color:white;
        }
        .starbutton{
            width: 85%;
            height: 85%;
            cursor: pointer;
            background-color: rgb(128, 78, 17);
            text-decoration: none;
            color:black;
            font-weight: bold;
            font-size: 25px;
            clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
            border-radius:0 0 10px 0;


        }
        .starbutton:hover{
            background-color: maroon;
        }