Delete Button Confirmation

/*Downloaded from https://www.codeseek.co/phildebrandt/delete-button-confirmation-EWKryE */
    * {
  box-sizing: border-box;
}

html {
  height: 100vh;
}
body {
  // background: #111;    
  display: flex;
  height: 100vh;
  justify-content: center;
  line-height: 1.5;
}

.content {
  align-self: center;
}

.btn-container {
  position: relative;
}

.btn-delete {
  color: #fff;
  background: #791515;
  display: inline-block;
  text-decoration: none;
  padding: 5px 15px;
  font-size: 14px;
  line-height: 1.5;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  transition: all 100ms ease-in;
  
  &.is-confirming {
    opacity: 0.5;
  }
}

.confirm {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  background: #fff;
  display: inline-block;
  transform: translateX(-50%);
  white-space: nowrap;
  padding: 10px;
  animation: animate_confirm 150ms forwards ease-out;
  border: 1px solid #000;
  
  &:before {
    position: absolute;
    z-index: 2;
    content: ' ';
    display: block;
    width: 0;
    height: 0;
    border: 5px solid transparent;
    border-top-color: #fff;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
  }
  
  &:after {
    position: absolute;
    content: ' ';
    display: block;
    width: 0;
    height: 0;
    border: ((1px * 1.4142135623731) + 5px) solid transparent;
    border-top-color: #000;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
  }
  
  &__link {
    display: inline-block;
    text-decoration: none;
    text-align: center;
    color: #444;
    background: #ccc;
    padding: 0 10px;
    margin-left: 5px;
    
    &:hover {
      background: #bbb;
    }
    
  }
}

@keyframes animate_confirm {
  0% {
    opacity: 0;
    transform: translate3d(-50%, 20%, 0) scale(0.8);
  }
  100% {
    opacity: 1;
    transform: translate3d(-50%, 0, 0) scale(1);
  }
}

/*Downloaded from https://www.codeseek.co/phildebrandt/delete-button-confirmation-EWKryE */
    $(function(){
  $('.btn-delete').on('click', function(e){
    e.preventDefault();
    var confirmHTML = '<div class="confirm"><span class="confirm__content">Are you sure?</span> <a href="#" class="confirm__link confirm__link--yes">Yes</a> <a href="#" class="confirm__link confirm__link--no">No</a></div>';
    $(this).toggleClass('is-confirming');
    if($('.btn-container').children('.confirm').length) {
      $('.confirm').remove(); 
    } else {
      $(this).before(confirmHTML);
      $('.confirm__link--yes').focus();
    }
  });
});