body{
 font-family: Arial, sans-serif;
 background: linear-gradient(135deg,#74ebd5,#9face6);
 height:100vh;
 display:flex;
 justify-content:center;
 align-items:center;
}
.box{
 background:#fff;
 width:320px;
 padding:25px;
 border-radius:12px;
 box-shadow:0 10px 30px rgba(0,0,0,.2);
 text-align:center;
}
input,button{
 width:100%;
 padding:10px;
 margin:8px 0;
 border-radius:6px;
}
button{
 background:#4facfe;
 border:none;
 color:#fff;
 font-size:16px;
}
a{ color:#4facfe; text-decoration:none; }
.msg{ margin-top:10px; }