How can I make a Table with a Scroll and fixed Header with CSS code, which looks good in any circumstance and on the cellphone too?

Question

To use on the multiple tables of my Asp.Net Core Code, I wanted a CSS code/style for my tables, which would make all of them have a scroll but with the table header fixed, making sure that all the rows and columns were aligned with each other. Something that for some reason is difficult to find, because I tried several alternatives, and they all worked very badly for me, since the differents codes which I tested completely misaligned the header with the columns below, or the width of the columns never adjusted well to the width of the text, etc.

So, after a while, I came up with this style code:

<style>
    * {
        box-sizing: border-box;
    }

    .wrapper2 {
        height: 30vw;
        overflow-y: scroll;
    }

    .card {
        background-color: #fff;
        border-radius: 10px;
        margin: 10% auto;
        position: relative;
        padding: 34px;
        color: #444;
        cursor: pointer;
        overflow-x: auto;
    }

        .card:before {
            display: block;
            position: absolute;
            background-color: #ccc;
            z-index: -1;
            box-shadow: 0 0 40px #999999;
            transition: box-shadow .2s ease-in-out;
        }

        .card.level-3:hover:before {
            box-shadow: 0 0 80px #999999;
        }

    .table {
        border-collapse: collapse;
        width: 100%;
    }

        .table td {
            overflow: hidden;
            word-break: normal;
            text-align: center;
        }

        .table th {
            text-align: center;
            word-break: normal;
        }

    .tablealign {
        float: right;
        width: 100%;
        height: 100%;
        border-radius: 3px;
        padding-bottom: 50px;
    }

    tbody {
        overflow-y: scroll;
        overflow-x: hidden;
        height: 336px;
        display: block;
    }

    thead {
        display: table;
        width: calc(100% - 17px);
        table-layout: fixed;
    }

    tbody tr {
        table-layout: fixed;
        display: table;
        width: 100%;
    }

    div.c {
        line-height: 1%;
    }
</style>

The rest of the code in the View:

<div class="container">
    <div class="card level-3">
        <h3>Blablabla</h3>

        <div class="tablealign">
            <div></div>
            <table class="table table-sm table-bordered">
                <thead class="thead-dark">
                    <tr>
                        <th>
                            <div>Name of The Person</div>
                        </th>
                        <th>
                            <div>Date of The Thing Cre</div>
                        </th>
                        <th>
                            <div>Name of The Universe</div>
                        </th>
                        <th>
                            <div>A Stuff of 4</div>
                        </th>
                        <th>
                            <div>A Stufff Of</div>
                        </th>
                        <th>
                            <div>Hour At Create</div>
                        </th>
                        <th>
                            <div>Hour At Lifeee</div>
                        </th>
                        <th><div></div></th>
                        <th>
                            <a class="btn btn-sm btn-primary" asp-action="Filtro" asp-route-id="">
                                SEARCH
                            </a>
                        </th>
                        <th><div></div></th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var item in ViewBag.Modelito)
                    {
                    <tr>
                        <td>
                            @item.Nom
                        </td>
                        <td>
                            @item.Fech
                        </td>
                        <td>
                            @item.NombM
                        </td>
                        <td>
                            @item.Momo
                        </td>
                        <td>
                            @item.RA
                        </td>
                        <td>
                            @item.Ho
                        </td>
                        <td>
                            @item.HourF
                        </td>
                        <td>
                            <a class="btn btn-sm btn-primary" asp-action="Edit" asp-route-id="@item.Id">
                                EDIT
                            </a>
                        </td>
                        <td>
                            <a class="btn btn-sm btn-primary" asp-action="Details" asp-route-id="@item.Id">
                                DETAILS
                            </a>
                        </td>
                        <td>
                            <a class="btn btn-sm btn-danger" asp-action="Delete" asp-route-id="@item.Id">
                                DELETEthis
                            </a>
                        </td>
                    </tr>
                    }
                </tbody>
            </table>
        </div>
    </div>
</div>

And all this code on the website looks like this:

Which works just fine, not bad but I would like the width of the header and column text to fit better, in the way you know...the way a tbody normally does with the td/th when It's just a normal table and the text adjusts visually nicely, but then when you ask this thing to have a scroll that doesn't move the head, the CSS code seems to completely lose its mind for reasons outside of my compression.

However, beyond improving this detail, my code generates the following gigantic problem, and that is, the View looks like this on a cellphone...:

Yes, this looks pretty bad.

How can I improve my code, get the table I really want, and also make it look good on a cellphone?? Thanks in advance for reading, I really need help with this.

Answer 1

You can use the style table-responsive with bootstrap.

 <div class="table-responsive-sm tablealign">
     ...

Then change table-layout to auto, and assign the mine-width to .table th. Then change the .table width and srollbar's width. Here is all the style.

    <style>
    * {
        box-sizing: border-box;
    }

    .wrapper2 {
        height: 30vw;
        overflow-y: scroll;
    }

    .card {
        background-color: #fff;
        border-radius: 10px;
        margin: 10% auto;
        position: relative;
        padding: 34px;
        color: #444;
        cursor: pointer;
        overflow-x: auto;
    }

        .card:before {
            display: block;
            position: absolute;
            background-color: #ccc;
            z-index: -1;
            box-shadow: 0 0 40px #999999;
            transition: box-shadow .2s ease-in-out;
        }

        .card.level-3:hover:before {
            box-shadow: 0 0 80px #999999;
        }

    .table {
        border-collapse: collapse;
        width: 95%;
    }

        .table td {
            overflow: hidden;
            word-break: normal;
            text-align: center;
        }

        .table th  {
            text-align: center;
            word-break: normal;
            min-width: 100px;
        }
    .tablealign {
        float: right;
        width: 100%;
        height: 100%;
        border-radius: 3px;
        padding-bottom: 50px;
    }

    tbody {
         overflow-y: auto;
        overflow-x: hidden;
        height: 336px;
        display: block;
    }
    tbody::-webkit-scrollbar {
        width: 0;
    }
    thead {
        display: table;
        width: calc(100% - 17px);
        table-layout: auto;
    }

    tbody tr {
        table-layout: fixed;
        display: table;
        width: 100%;
    }

    div.c {
        line-height: 1%;
    }
    
</style>