elemenPlus中，如何去掉el-input中 文本域 textarea自带的边框和角标

1、去掉角标

:deep(.el-textarea__inner) {
  resize: none !important; // 去除右下角图标
}

2、去除边框，并自定义背景色

  <el-input
      ref="textareaRef"
      v-model="tempContent"
      :style="{
        '--el-border-color': 'rgba(255,255,255,0.0)',
        '--el-input-focus-border-color': 'rgba(255,255,255,0.0)',
        '--el-input-focus-border-width': '0px',
        '--el-input-hover-border-color': 'rgba(255,255,255,0.0)',
        '--el-input-hover-border-width': '0px',
        '--el-input-bg-color': 'rgba(0,0,0,0.8)'
      }"
      type="textarea"
      placeholder="请输入"
      :autosize="{ minRows: 8, maxRows: 20 }"
      class="custom-textarea"
    />

效果图