calendar-1 {
    width: 300px;
    max-width: calc(100% - 40px);
    height: fit-content;
    padding: 20px;
    border-radius: 10px;
    background: white;
    color: #444444;
    text-align: center;
    -webkit-user-select: none;
    /* Safari */
    -ms-user-select: none;
    /* IE 10 and IE 11 */
    user-select: none;
    /* Standard syntax */
}

calendar-1 div {
    display: flex;
    justify-content: space-between;
}

calendar-1 h3 {
    padding: 10px;
}

calendar-1 button {
    background: none;
    border: none;
    font-size: 25px;
    opacity: 0.5;
    cursor: pointer;
}
calendar-1 button:hover {
    opacity: 1;
}

calendar-1 table {
    text-align: center;
    width: 100%;
}

calendar-1 tr.hidden {
    display: none;
}

calendar-1 th {
    color: #444444;
}

calendar-1 td {
    width: calc(100% / 7);
    height: 40px;
    transition: 0.3s;
}

calendar-1 td.today:not(.outmonth) {
    color: white;
    background: dodgerblue;
    border-radius: 5px;
}

calendar-1 td.outmonth {
    color: #777777;
}

calendar-1 td:not(.outmonth) {
    cursor: pointer;
}