html, body {
    padding: 0;
    margin: 10;
    width: 100%;
    height: 100%;
    font-family: sans-serif;
}

#container {
    width: 95%;
    margin: 0 auto;
}

button {
    padding: 10px;
    color: white;
    background-color: #2c7be5;
    border-color: white;
    border-radius: 5px;
    font-size: x-large;
}