*, *::before, *::after {
    box-sizing: border-box;
}

:root {
    color-scheme: light dark;
}

body {
    margin: 0 auto;
    padding: 2rem;
    max-width: 1000px;
    line-height: 1.6em;
}

li {
    margin-top: 1ex;
}

table {
    border-collapse: collapse;
}

table td, table th {
    border: 1px solid;
    padding: 4px;
}

#scheduler {
    border: 1px solid;
    padding: 10px;
}

#scheduler form {
    display: flex;
    flex-direction: column;
    justify-content: start;
    align-items: center;
    gap: 10px;
}

#scheduler form #tail {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: start;
    align-items: start;
    gap: 10px;
}

#scheduler #submit-div {
    width: 100%;
    text-align: center;
}

#scheduler form input[type="submit"] {
    width: 30%;
    padding: 5px;
}

#schedule-table-scroller {
    width: 100%;
    overflow: scroll;
    padding-bottom: 20px;
}

#schedule-table {
    width: max-content;
}