* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

#letter_frequency_table td {
    padding: 5px 25px;
    text-align: right;
}

#letter_frequency_table td.frequency_letter_cell {
    text-align: center;
    font-family: serif;
    font-size: 1.5em;
}

#letter_frequency_table tr:nth-child(odd) {
    background: #ddd;
}

#letter_frequency_table tr:nth-child(even) {
    background: #eee;
}

.square {
    width: 60px;
    height: 60px;
    background: #00dd00;
}

#letters_by_slot_table td {
    padding: 5px 5px;
    text-align: right;
    font-size: 0.8em;
}

.letters_by_slot_table td.letter_cell {
    text-align: center;
    font-family: serif;
    font-size: 1.2em;
    /* font-weight: bold; */
}

.letters_by_slot_table tr:nth-child(odd) {
    background: #eee;
}

.letters_by_slot_table tr:nth-child(even) {
    background: #ddd;
}

.letters_by_slot_table tr:nth-child(1) {
    background: #fff;
}

.table_container {
    display: flex;
}

.table_container table {
    margin-right: 5px;
}