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

main {
    flex-grow: 1;
    margin-top: 25px;
}

table, td, tr, th {
    border: 0;
    padding: 3px 3px;
    font-size: 16px;
}

#main-table {
    border: 3px solid #004d40;
    padding: 10px
}

#main-table thead, .null-title {
    font-weight: 700;
}

#main-table-td-for-null-table {
    padding: 0;
}

.big-bottom-border {
    border-bottom: 3px solid #004d40;
}

.big-right-border {
    border-right: 3px solid #004d40;
}

.light-top-border {
    border-top: 1px solid #004d40;
}

.light-bottom-border {
    border-bottom: 1px solid #004d40;
}

.border-white {
    border-color: #b2dfdb;
}

#grand-title {
    writing-mode: vertical-lr;
    text-orientation: sideways;
}

#null-table {
    height: 100%;
}

#null-table tbody tr td {
    padding: 0 3px 3px 3px;  /* top,  right, bottom, left*/
}

#dummy-row, #dummy-row td {
    width: 50%;
    height: 0;
    padding: 0 !important;
}

a {
    text-decoration: underline solid #b2dfdb;
}