CyberPanel/static/baseTemplate/assets/widgets/datepicker/datepicker.css

    /* Bootstrap datepicker */
    
    .bsdatepicker {
        top: 0;
        left: 0;
        margin-top: 1px;
        padding: 4px !important;
    }
    .bsdatepicker:before {
        position: absolute;
        top: -7px;
        left: 6px;
        display: inline-block;
        content: '';
        border-right: 7px solid transparent;
        border-bottom: 7px solid transparent;
        border-bottom-color: transparent;
        border-left: 7px solid transparent;
    }
    .bsdatepicker:after {
        position: absolute;
        top: -6px;
        left: 7px;
        display: inline-block;
        content: '';
        border-right: 6px solid transparent;
        border-bottom: 6px solid #fff;
        border-left: 6px solid transparent;
    }
    .bsdatepicker > div {
        display: none;
    }
    .bsdatepicker table {
        width: 100%;
        margin: 0;
    }
    .bsdatepicker td,
    .bsdatepicker th {
        width: 20px;
        height: 20px;
        margin: 3px;
        text-align: center;
    }
    .bsdatepicker td.day:hover {
        cursor: pointer;
    }
    .bsdatepicker td.day.disabled {
        color: #eee;
    }
    .bsdatepicker td.old,
    .bsdatepicker td.new {
        color: #999;
    }
    .bsdatepicker td span {
        line-height: 44px;
        display: block;
        float: left;
        width: 54px;
        height: 44px;
        margin: 2px;
        cursor: pointer;
    }
    .bsdatepicker td span.old {
        color: #999;
    }
    .bsdatepicker th.switch {
        width: 145px;
    }
    .bsdatepicker th.next,
    .bsdatepicker th.prev {
        font-size: 21px;
    }
    .bsdatepicker thead tr:first-child th {
        cursor: pointer;
    }
    .input-append.date .add-on i,
    .input-prepend.date .add-on i {
        display: block;
        width: 16px;
        height: 16px;
        cursor: pointer;
    }