title: header align center in b-modal of bootstrapVue
body: <pre><code>            &lt;div class=&quot;text-center&quot;&gt;
              &lt;b-modal visible centered id=&quot;send-pin-modal&quot; header=&quot;test&quot; title=&quot;Confirm Approval&quot; hide-footer hide-header-close no-close-on-backdrop no-close-on-esc&gt;
                  &lt;div class=&quot;col-12 text-center&quot;&gt;
                      &lt;!--&lt;p class=&quot;col-12&quot;&gt;After being approved, the disbursement cannot be undone.&lt;/p&gt;--&gt;
                  &lt;/div&gt;
                  &lt;div class=&quot;col-12&quot;&gt;
                      &lt;div class=&quot;ml-5 mr-5&quot;&gt;
                      &lt;b-form-input  type=&quot;password&quot; id=&quot;pin-input&quot; v-model=&quot;pin&quot;  required&gt;&lt;/b-form-input&gt;
                      &lt;/div&gt;
                  &lt;/div&gt;
                  &lt;div class=&quot;col-12 text-center&quot;&gt;
                      &lt;slot name=&quot;pin-error&quot; class=&quot;text-danger text-center&quot; v-show=&quot;comment&quot;&gt;{{comment}}&lt;/slot&gt;
                  &lt;/div&gt;
                  &lt;div class=&quot;col-12&quot;&gt;
                  &lt;/div&gt;
                  &lt;div class=&quot;col-12 text-center&quot;&gt;
                      &lt;b-button variant=&quot;primary&quot; size=&quot;sm&quot; class=&quot;mt-2 mr-2&quot; @click=&quot;verifyPin&quot;&gt;Continue&lt;/b-button&gt;
                      &lt;b-button  variant=&quot;danger&quot; size=&quot;sm&quot; class=&quot;mt-2 ml-2&quot; @click=&quot;hidePinModal&quot;&gt;Cancel&lt;/b-button&gt;
                  &lt;/div&gt;
              &lt;/b-modal&gt;
          &lt;/div&gt;
  </code></pre>
  <p>here is my sample code of bootstrapVue. I also attach output image.</p>
  <p><a href="https://i.stack.imgur.com/O5ha9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/O5ha9.png" alt="enter image description here" /></a></p>
  <p>How can i allight title &quot;Confirm Approval&quot; as center?</p>