小编Mhm*_*ani的帖子

ion-content {
  --background-color: rgba(255, 255, 255, 0.7);
}

.closeBtn {
  position: absolute;
  bottom: 0px;
  left: 0px;
  right: 0px;
}

<ion-content padding>
  <h3 class="ion-text-center">
    <strong>Test.</strong>
  </h3>
  <ion-button class="closeBtn" color='light' fill='clear'>Close</ion-button>
</ion-content>