remove box bulma until button clicked code example

Example 1: remove button highlight on click

.btn:focus {
  outline: none;
  box-shadow: none;
}

Example 2: submit button bulma

<div class="field is-grouped is-grouped-centered">
  <p class="control">
    <a class="button is-primary">
      Submit
    </a>
  </p>
</div>