vue在input框后面添加单位

<el-row >

        <el-col style="width: 48%">
          <el-form-item label="大米" prop="screenrow"  >

              <el-input v-model="form.screenrow" placeholder="请输入重量" >
                <i slot="suffix" style="font-style:normal;margin-right: 10px; line-height: 30px; color: #1e1e1e">KG</i>
              </el-input>


          </el-form-item>


        </el-col>
        <el-col style="width: 48%; ">

          <el-form-item label="体积" prop="screencol"  >

              <el-input v-model="form.screencol" placeholder="请输入体积" style="margin-left: 15px">
                <i slot="suffix" style="font-style:normal;margin-right: 10px; line-height: 30px; color: #1e1e1e">m³</i>
              </el-input>

          </el-form-item>
        </el-col>
        </el-row>