body{
    margin:0;
    font-family:Poppins,sans-serif;
    background:linear-gradient(135deg,#0f2027,#203a43,#2c5364);
    color:white;
    text-align:center;
}

.container{
    width:500px;
    margin:40px auto;
    background:rgba(255,255,255,.1);
    backdrop-filter:blur(10px);
    padding:30px;
    border-radius:20px;
    box-shadow:0 0 20px rgba(0,0,0,.3);
}
#r{
  background-color: aqua;
  padding: 5px  10px;
  border: 2px black solid;
  border-radius: 10px;
}