body{
font-family:Arial;
background:#111;
color:white;
height:100vh;
display:flex;
align-items:center;
justify-content:center;
}

.box{
background:#222;
padding:40px;
border-radius:15px;
text-align:center;
}

input{
width:300px;
padding:15px;
border-radius:8px;
border:none;
}

button{
padding:15px 30px;
background:red;
color:white;
border:0;
border-radius:8px;
}