body {
    background: rgb(70, 142, 236);
    font: normal 15px Arial;
}

header {
    color: white;
    text-align: center;
}

section {
    background: white;
    border-radius: 10px;
    padding: 15px;
    width: 500px;
    margin: auto;
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.363);

}

footer {
    color: white;
    text-align: center;
    font-style: ita;
}

.container {
    text-align: center;
    background: wheat;
    padding: 30px;
    border-radius: 10px;
}

input {
    padding: 10px;
    font-size: 1em;
    width: 100px;
    text-align: center;
    margin-bottom: 10px;
}

button {
    padding: 10px 20px;
    font-size: 1em;
    margin-left: 10px;
    cursor: pointer;
}

#mensagem {
    font-size: 3em;
    margin-top: 20px;
    font-weight: bold;
}