body{

background:#f4f4f4;

font-family:Arial;

}

.contenedor{

width:500px;

margin:auto;

margin-top:50px;

background:white;

padding:30px;

border-radius:10px;

}

input{

width:65%;

padding:10px;

}

button{

padding:10px;

background:green;

color:white;

border:none;

}

li{

margin:10px;

font-size:18px;

}