body{

background:#0f172a;
color:white;

font-family:Arial, sans-serif;

display:flex;

justify-content:center;

align-items:center;

height:100vh;

margin:0;

}

.container{

text-align:center;

padding:40px;

background:#1e293b;

border-radius:15px;

}

.btn,
button{

display:inline-block;

padding:15px 30px;

margin:10px;

text-decoration:none;

background:#2563eb;

color:white;

border:none;

border-radius:8px;

cursor:pointer;

}

.verde{

background:#16a34a;

}

input{

padding:12px;

width:250px;

margin:15px;

}

.error{

color:#ff8080;

}