@charset "UTF-8";

* {
    margin: 0px;
    padding: 0px;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background-color: orange;
}

header {
    padding: 20px;
}

header h1 {
    text-align: center;
}


main {
    text-align: center;
    margin: auto;
    margin-top: 30px;
    margin-bottom: 30px;
    background-color: gray;
    height: 300px;
    width: 400px;
    padding: 10px;
    border: 1px solid black;
}

div.resultado {
    margin: auto;
    height: 40px;
    width: 300px;
    background-color: white;
    border: 1px solid black;
    padding-top: 20px;
}

div.numeros {
    padding-top: 10px;
    padding-bottom: 10px;
}

input {
    text-align: center;
    width: 100px;
    height: 50px;
    font-size: 18px;
    border: 1px solid black;
}

input#numero1 {
    margin-right: 10px;
}

input#numero2 {
    margin-left: 10px; 
}

.container button {
    padding: 10px 20px;
    font-size: 25px;
    border: 1px solid black;
}

button:hover {
    background-color: lightgray;
}

p {
    padding-top: 10px;
    font-weight: 600;
}

footer {
    padding: 10px;
}

footer p {
    color: white;
    text-align: center;
    font-size: 20px;
    text-shadow: 1px 1px 4px black;
}

footer a {
    color: white;
    text-decoration: none;
}