div.loginbox{
 bottom:20px;
 position: fixed;
 right: 75px;
 
}

.loginbox{
  margin:0 auto;
  max-width:500px; 
  padding: 25px 25px;
  position: relative;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  opacity: 0.7;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  padding: 20px 30px;
  width: 400px;
  text-align: center;
  backdrop-filter: blur(10px);
}