How do I hide a column in screen and delete it in csv file?

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HTML

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MVC

I have created a table and display it on screen, but I want to hide 2 columns without changing the entire view as I may use it later on.

How do I hide with it auto-readjusting the column width, etc.

What I have tried:

<table class="table-scr" style="width: 100%">
    <colgroup>  
        <col style="width: 10%">  
        <col style="width: 20%">  
        <col style="width: 20%">  
        <col style="width: 30%">  
        <col style="width: 20%">
    </colgroup>
    <tbody>      
        <tr>
            <th>Student ID</th>     
            <th>First Name</th>     
            <th>Last Name</th>     
            <th>Department</th>     
            <th>Major</th>
        </tr>
    </tbody>
    <tbody>
        <tr>  
            <td class="@class">@std_ID</td>  
            <td class="@class">@std_FirstName</td>  
            <td class="@class">@std_LastName</td>  
            <td class="@class">@std_dept</td>  
            <td class="@class">@std_major</td>
        </tr>
    </tbody>
</table>