body {
background: url("img/bg.jpg");
background-attachment: fixed;
height: 100%;
}

.main {
    width: 50%;
    margin: 0 auto;
    
    
}


.logo {
  position: fixed;
  width: 15%;
}


.bnt {
   border-radius: 50%;
 
}

#btn {
    border-radius: 70px ;
}

main {
    border: 6px solid rgb(245, 239, 239);
}