I've seen this question and applied the style, however, my items in table are not vertically aligned:
HTML looks like this:
.table > tbody > tr > td {
        vertical-align: center;
        background-color: lightgreen;
    }<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<div class="table-responsive">  
      <table class="table table-sm table-hover">
          <thead>
              <tr class="d-flex">
                  <th class="col-2">Item 01</th>
                  <th class="col-2">Item 02</th>
                  <th class="text-center col-4">Buttons</th>
                  <th class="text-right col-2">Item 04</th>
              </tr>
          </thead>
          <tbody>
              <tr class="d-flex">
                  <td class="col-2">
                      <div style="background-image: url(//placehold.it/1026x600/CC1111/FFF);width: 80px;
                          height: 80px;
                          border-radius: 100%;
                          background-size: cover;">
                      </div>
                  </td>
                  <td class="col-2 text-center">Hey!</td>
                  <th class="col-4">
                      <div class="row no-gutters">
                          <div class="col-2">
                              <button class="btn btn-secondary btn-block">
                                  -
                              </button>
                          </div>
                          <div class="col-8">
                              7 in cart
                          </div>
                          <div class="col-2">
                            <button class="btn btn-secondary btn-block">
                                +
                            </button>
                          </div>
                      </div>
                  </th>
                  <th class="col-2 text-right">Item 04</th>
              </tr>
          </tbody>
      </table>
    </div>I cannot understand why it is not vertically aligned as background-color is applied. Could you say, please, how items can be vertically aligned?
Any help would be greatly appreciated.

 
     
    