#aquarium-app {
    border: 2px solid #034A86;
    padding: 15px;
    background: #E6F0FB;
    max-width: 400px;
    margin: 15px auto;
    font-family: sans-serif;
    border-radius: 6px;
}

#aquarium-app h3 {
    text-align: center;
    color: #034A86;
}

#aquarium-app label {
    display: block;
    margin-top: 10px;
}

#aquarium-app input {
    width: 100%;
    padding: 5px;
    margin-top: 2px;
    box-sizing: border-box;
}

#aquarium-app button {
    margin-top: 15px;
    padding: 10px 15px;
    background-color: #034A86;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

#aquarium-app button:hover {
    background-color: #022D55;
}

#resultado {
    margin-top: 15px;
    font-weight: bold;
}