I have added bootstrap datetimepicker to my MVC ASP.NET application and it works, but the width is very narrow. I would like to alter the CSS to make it wider, but can't seem to figure out how.

I have tried changing almost all of width attributes in the CSS files that came with datetimepicker, but haven't found one that altered anything. I have also tried to alter the CSS in my view, but can't seem to figure out how to do this either.

CSS for datetimepicker:

/*!
 * Datetimepicker for Bootstrap 3
 * version : 4.15.35
 * https://github.com/Eonasdan/bootstrap-datetimepicker/
 */
@bs-datetimepicker-timepicker-font-size: 1.2em;
@bs-datetimepicker-active-bg: @btn-primary-bg;
@bs-datetimepicker-active-color: @btn-primary-color;
@bs-datetimepicker-border-radius: @border-radius-base;
@bs-datetimepicker-btn-hover-bg: @gray-lighter;
@bs-datetimepicker-disabled-color: @gray-light;
@bs-datetimepicker-alternate-color: @gray-light;
@bs-datetimepicker-secondary-border-color: #ccc;
@bs-datetimepicker-secondary-border-color-rgba: rgba(0, 0, 0, 0.2);
@bs-datetimepicker-primary-border-color: white;
@bs-datetimepicker-text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);

.bootstrap-datetimepicker-widget {
    list-style: none;

    &.dropdown-menu {
        margin: 2px 0;
        padding: 4px;
        width: 19em;

        &.timepicker-sbs {
            @media (min-width: @screen-sm-min) {
                width: 38em;
            }

            @media (min-width: @screen-md-min) {
                width: 38em;
            }

            @media (min-width: @screen-lg-min) {
                width: 38em;
            }
        }

        &:before, &:after {
            content: '';
            display: inline-block;
            position: absolute;
        }

        &.bottom {
            &:before {
                border-left: 7px solid transparent;
                border-right: 7px solid transparent;
                border-bottom: 7px solid @bs-datetimepicker-secondary-border-color;
                border-bottom-color: @bs-datetimepicker-secondary-border-color-rgba;
                top: -7px;
                left: 7px;
            }

            &:after {
                border-left: 6px solid transparent;
                border-right: 6px solid transparent;
                border-bottom: 6px solid @bs-datetimepicker-primary-border-color;
                top: -6px;
                left: 8px;
            }
        }

        &.top {
            &:before {
                border-left: 7px solid transparent;
                border-right: 7px solid transparent;
                border-top: 7px solid @bs-datetimepicker-secondary-border-color;
                border-top-color: @bs-datetimepicker-secondary-border-color-rgba;
                bottom: -7px;
                left: 6px;
            }

            &:after {
                border-left: 6px solid transparent;
                border-right: 6px solid transparent;
                border-top: 6px solid @bs-datetimepicker-primary-border-color;
                bottom: -6px;
                left: 7px;
            }
        }

        &.pull-right {
            &:before {
                left: auto;
                right: 6px;
            }

            &:after {
                left: auto;
                right: 7px;
            }
        }
    }

    .list-unstyled {
        margin: 0;
    }

    a[data-action] {
        padding: 6px 0;
    }

    a[data-action]:active {
        box-shadow: none;
    }

    .timepicker-hour, .timepicker-minute, .timepicker-second {
        width: 54px;
        font-weight: bold;
        font-size: @bs-datetimepicker-timepicker-font-size;
        margin: 0;
    }

    button[data-action] {
        padding: 6px;
    }

    .btn[data-action="incrementHours"]::after {
        .sr-only();
        content: "Increment Hours";
    }

    .btn[data-action="incrementMinutes"]::after {
        .sr-only();
        content: "Increment Minutes";
    }

    .btn[data-action="decrementHours"]::after {
        .sr-only();
        content: "Decrement Hours";
    }

    .btn[data-action="decrementMinutes"]::after {
        .sr-only();
        content: "Decrement Minutes";
    }

    .btn[data-action="showHours"]::after {
        .sr-only();
        content: "Show Hours";
    }

    .btn[data-action="showMinutes"]::after {
        .sr-only();
        content: "Show Minutes";
    }

    .btn[data-action="togglePeriod"]::after {
        .sr-only();
        content: "Toggle AM/PM";
    }

    .btn[data-action="clear"]::after {
        .sr-only();
        content: "Clear the picker";
    }

    .btn[data-action="today"]::after {
        .sr-only();
        content: "Set the date to today";
    }

    .picker-switch {
        text-align: center;

        &::after {
            .sr-only();
            content: "Toggle Date and Time Screens";
        }

        td {
            padding: 0;
            margin: 0;
            height: auto;
            width: auto;
            line-height: inherit;

            span {
                line-height: 2.5;
                height: 2.5em;
                width: 100%;
            }
        }
    }

    table {
        width: 100%;
        margin: 0;


        & td,
        & th {
            text-align: center;
            border-radius: @bs-datetimepicker-border-radius;
        }

        & th {
            height: 20px;
            line-height: 20px;
            width: 20px;

            &.picker-switch {
                width: 145px;
            }

            &.disabled,
            &.disabled:hover {
                background: none;
                color: @bs-datetimepicker-disabled-color;
                cursor: not-allowed;
            }

            &.prev::after {
                .sr-only();
                content: "Previous Month";
            }

            &.next::after {
                .sr-only();
                content: "Next Month";
            }
        }

        & thead tr:first-child th {
            cursor: pointer;

            &:hover {
                background: @bs-datetimepicker-btn-hover-bg;
            }
        }

        & td {
            height: 54px;
            line-height: 54px;
            width: 54px;

            &.cw {
                font-size: .8em;
                height: 20px;
                line-height: 20px;
                color: @bs-datetimepicker-alternate-color;
            }

            &.day {
                height: 20px;
                line-height: 20px;
                width: 20px;
            }

            &.day:hover,
            &.hour:hover,
            &.minute:hover,
            &.second:hover {
                background: @bs-datetimepicker-btn-hover-bg;
                cursor: pointer;
            }

            &.old,
            &.new {
                color: @bs-datetimepicker-alternate-color;
            }

            &.today {
                position: relative;

                &:before {
                    content: '';
                    display: inline-block;
                    border: solid transparent;
                    border-width: 0 0 7px 7px;
                    border-bottom-color: @bs-datetimepicker-active-bg;
                    border-top-color: @bs-datetimepicker-secondary-border-color-rgba;
                    position: absolute;
                    bottom: 4px;
                    right: 4px;
                }
            }

            &.active,
            &.active:hover {
                background-color: @bs-datetimepicker-active-bg;
                color: @bs-datetimepicker-active-color;
                text-shadow: @bs-datetimepicker-text-shadow;
            }

            &.active.today:before {
                border-bottom-color: #fff;
            }

            &.disabled,
            &.disabled:hover {
                background: none;
                color: @bs-datetimepicker-disabled-color;
                cursor: not-allowed;
            }

            span {
                display: inline-block;
                width: 54px;
                height: 54px;
                line-height: 54px;
                margin: 2px 1.5px;
                cursor: pointer;
                border-radius: @bs-datetimepicker-border-radius;

                &:hover {
                    background: @bs-datetimepicker-btn-hover-bg;
                }

                &.active {
                    background-color: @bs-datetimepicker-active-bg;
                    color: @bs-datetimepicker-active-color;
                    text-shadow: @bs-datetimepicker-text-shadow;
                }

                &.old {
                    color: @bs-datetimepicker-alternate-color;
                }

                &.disabled,
                &.disabled:hover {
                    background: none;
                    color: @bs-datetimepicker-disabled-color;
                    cursor: not-allowed;
                }
            }
        }
    }

    &.usetwentyfour {
        td.hour {
            height: 27px;
            line-height: 27px;
        }
    }

    &.wider {
        width: 21em;
    }

    & .datepicker-decades .decade {
        line-height: 1.8em !important;
    }
}

.input-group.date {
    & .input-group-addon {
        cursor: pointer;
    }
}

My View:

@model RoboticsScheduler.Models.Event
@{
    ViewBag.Title = "Suggest";
}

<h2>Suggest Event</h2>

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        @Html.ValidationSummary(true)
        @Html.HiddenFor(model => model.Id)

        <div class="form-group">
            @Html.Label("Name", new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.TextBoxFor(model => model.Name, new { @class = "form-control" })
                @Html.ValidationMessageFor(model => model.Name)
            </div>
        </div>

        <div class="form-group">
            @Html.Label("Start Date", new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                <input type="text" class="form-control" name="StartDate" placeholder="--Enter a Start Date--" id="datetimepicker1" />
                @Html.ValidationMessageFor(model => model.StartDate)
            </div>

        </div>

        <div class="form-group">
            @Html.Label("End Date", new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                <input type="text" class="form-control" name="EndDate" placeholder="--Enter an End Date--" id="datetimepicker2" />
                @Html.ValidationMessageFor(model => model.EndDate)
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Suggest" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<script type="text/javascript">
    $(document).ready(function () {
        $('#datetimepicker1').datetimepicker();
        $('#datetimepicker2').datetimepicker();
    });
</script>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

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