导航菜单的下拉功能有问题，求解？

Question

为何下拉会从右边弹出，按道理应该是下拉菜单啊，求解。

<template>
  <div >
  <div id="layout" >

    <a-layoutSider class="layoutSider" theme="light" v-model="collapsed" :trigger="null" collapsible="">
      <div class="logo" />
      <div id="layout-menu">

        <a-menu
            mode="inline"

            :style="{ borderRight: 0,}"
        >
          <a-sub-menu key="sub1">
            <span slot="title">
              <img src="../icons/trainIcon.png" alt="trainIcon.png" class="icon" title="培训中心">
              培训中心
            </span>
            <a-menu-item key="1">
              <img src="../icons/signInIcon.png" alt="signInIcon.png" class="secondIcon">
              签到
            </a-menu-item>

          </a-sub-menu>


          <a-sub-menu key="sub2">
            <span slot="title">
              <img src="../icons/projectIcon.png" alt="projectIcon.png" class="icon" title="项目中心">
              项目中心
            </span>
            <a-menu-item key="2">
              <img src="../icons/addProjectIcon.png" alt="signInIcon.png" class="secondIcon">
              新增项目
            </a-menu-item>

          </a-sub-menu>


          <a-menu-item key="3">
            <img src="../icons/announceIcon.png" alt="announceIcon.png" class="icon">
            公告中心
          </a-menu-item>

          <a-sub-menu key="sub3">
            <span slot="title">
            <img src="../icons/personIcon.png" alt="personIcon.png" class="icon" title="个人中心">
                个人中心
            </span>
            <a-menu-item key="4">
              <img src="../icons/completeInfoIcon.png" alt="completeInfoIcon.png" class="secondIcon">
              完善个人信息
            </a-menu-item>

            <a-menu-item key="5">
              <img src="../icons/changePasswordIcon.png" alt="changePasswordIcon.png" class="secondIcon">
              修改密码
            </a-menu-item>

          </a-sub-menu>

          <a-menu-item key="6">
            <img src="../icons/friendListIcon.png" alt="friendListIcon.png" class="icon">
            通讯录
          </a-menu-item>



        </a-menu>


      </div>
    </a-layoutSider>


    <a-layout>
      <a-layout-header :style="layoutHeader">
        <a-icon
            class="trigger"
            :type="collapsed ? 'menu-unfold' : 'menu-fold'"
            @click="() => (collapsed = !collapsed)"
            :style="{float:'left',marginTop:'20px'}"
        />


        <div id="layout-header-right">
          <a-badge count="999" :style="{marginRight:'20px',marginTop:'5px'}"
            :numberStyle="{padding: '0px 3px'}">

            <img src="../icons/messageIcon.png" alt="messageIcon" class="messageIcon">
            <a href="#" class="head-example" />
          </a-badge>


          <img src="../assets/avatar.jpg" alt="avatar.jpg" class="avatar">

          <span id="userName">{{userName}}</span>

          <img src="../icons/exitIcon.png" alt="exitIcon.png" class="messageIcon" title="退出">
        </div>




      </a-layout-header>

      <div id="layout-inner">
        <router-view></router-view>
        <!--          需要在布局模板中修改，则在需要修改的标签下，加router<router-view></router-view>，-->
        <!--          再到需要修改的页面下的div id="content"下改内容-->
      </div>


    </a-layout>

  </div>



  </div>

</template>

<script>


export default {

  data() {
    return {
      userName:"dh古文化街七点半ekjs",
      collapsed: false,


      layoutHeader:{
        backgroundColor:'white',
        paddingRight:'20px',
        paddingLeft:'20px',
        height:'50px',
        lineHeight:'54px'

      }
  }
  },


}
</script>

<style scoped>
@import "../styles/index.css";
</style>

此为vue组件代码此为vue组件代码（使用了ant design vue组件），下为响应的css样式代码，下为响应的css样式代码

.layoutSider{
    width:250px;
    float: left;

}

.logo{
    width: 80px;
    height: 80px;
    background-image: url(../assets/logo.jpg);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    margin: 20px auto;
   /*收缩边栏的时候logo收缩不了*/
}


img.icon{
    width:30px;
    height:30px;
    margin-right:15px;

}

img.secondIcon{
    width:25px;
    height:25px;
}


img.messageIcon{
    width:25px;
    height:25px;
    margin-left:10px

}


div#layout-header-right{
    float:right;
    display: flex;
    margin-top:10px;


}


span#userName{
    font-size: 16px;
    font-family: sans-serif;
    color:black;
    margin-top:-10px;
    margin-left:8px;

}


img.avatar{
    width:35px;
    height:35px;
    border-radius: 100%;
    margin-bottom:10px

}

Answer 1

f12检查一下，看看哪个样式影响了，一个一个去掉