.left_bold {
    text-align: left;
    font-weight: bold;
    vertical-align: middle;
}

.center {
    text-align: center;
    vertical-align: middle;
}

.center-red {
    text-align: center;
    color: red;
}

.center-gray {
    text-align: center;
    vertical-align: middle;
    background-color: rgb(240, 240, 240, 0.5);
}

.center-statistics {
    text-align: center;
    vertical-align: middle;
    background-color: rgb(220, 255, 220);
}

.error {
    color: blue;
}