.clickable-tr td, .clickable-tr th {
    cursor: pointer;
    user-select: none;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

footer {
    background: #f1f1f1;
    padding: 10px;
}