需求：手机键盘弹起后，页面底部的输入框跟随弹起，且页面不被顶上去

html:

     <textarea
		    class="textinput"
			placeholder-class="input-place"
			auto-height
			:maxlength="2000"
			v-model="text"
			placeholder="在此输入您想要我研究的问题"
			:show-confirm-bar="false"
			:adjust-position="false"
			@keyboardheightchange="keyboardMove"
	  ></textarea>

js:

  const inputBottom = ref(null)
  const keyboardMove = (e) => {
	  if (e.detail.height) {
		showRect.value = false
	  } else {
		showRect.value = true
	  }
	  inputBottom.value = e.detail.height
  }

css:

textarea {
    max-height: 160rpx !important;
    overflow-y: hidden;
}