*, *::before, *::after {
    box-sizing: border-box;
}
*:not(dialog) {
    padding: 0;
    margin: 0;
}

body {
    padding: 60px;
}

details {
    border: solid #aaa 2px;
    padding: 15px;
    margin-bottom: 5px;
}

summary {
    font-weight: bold;
}