.calendar {
    display: flex;
    flex-flow: column;
}
.calendar .header .month-year {
    font-size: 20px;
    font-weight: bold;
    color: lightgreen;
    padding: 20px 0;
}
.calendar .days {
    display: flex;
    flex-flow: wrap;
}
.calendar .days .day_name {
    width: calc(77% / 7);
    border-right: 1px solid lightgreen;
		border-bottom: 1px solid lightgreen;
    padding: 20px;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: bold;
    color: blue;
    background-color: green;
}
.calendar .days .day_name:nth-child(7) {
    border: none;
}
.calendar .days .day_num {
    display: flex;
    flex-flow: column;
    width: calc(79.8% / 7);
    border-right: 1px solid lightgreen;
    border-bottom: 1px solid lightgreen;
    padding: 15px;
    font-weight: bold;
    color: red;
    cursor: pointer;
		min-height: 50px;
}
.calendar .days .day_num span {
    display: inline-flex;
    width: 30px;
    font-size: 14px;
}
.calendar .days .day_num .event {
    margin-top: 10px;
    font-weight: 500;
    font-size: 14px;
    padding: 3px 6px;
    border-radius: 4px;
    background-color: brown;
    color: yellow;
    word-wrap: break-word;
}
.calendar .days .day_num .event.green {
    background-color: green;
}
.calendar .days .day_num .event.blue {
    background-color: blue;
}
.calendar .days .day_num .event.red {
    background-color: red;
}
.calendar .days .day_num:nth-child(7n+1) {
    border-left: 1px solid #e6e9ea;
}
.calendar .days .day_num:hover {
    background-color: purper;
}
.calendar .days .day_num.ignore {
    background-color: black;
    color: magenta;
    cursor: inherit;
}
.calendar .days .day_num.selected {
    background-color: lightgray;
    cursor: inherit;
}