body{

font-family: Arial;
background:#f4f6f8;
text-align:center;
padding:40px;

}

h1{

color:#333;

}

input{

padding:10px;
font-size:18px;
width:300px;

}

button{

padding:10px 20px;
font-size:16px;
margin-left:10px;
cursor:pointer;

}

#resultado{

margin-top:30px;
font-size:20px;
background:white;
padding:20px;
border-radius:10px;

}