.days_table tr {background-color: rgba(255,255,255, 0.9);}
.days_table tr:nth-child(2n) {background-color: whitesmoke;}

.days_table th {text-align: center;}

.days_table td:nth-child(1), .days_table td:nth-child(2), .days_table td:nth-child(3),
.days_table td:nth-child(4), .days_table td:nth-child(5), .days_table td:nth-child(6)
{
    text-align: center; font-weight: normal;
}

.days_table td:nth-child(6) {font-weight: bold; width: 45px;}