:root{
 --verde:#1E7F3C;
}
body{font-family:Arial;background:#f4f6f7;}
.login{display:flex;justify-content:center;align-items:center;height:100vh;}
form{background:white;padding:30px;border-radius:8px;}
button{background:var(--verde);color:white;padding:10px;border:none;width:100%;}