<el-upload class="avatar-uploader"
:show-file-list="false" :http-request="uploadPicturePost" :diabled="isView" style="text-align: center;margin:40px;" >
<img v-if="studentForm.image" :src="studentForm.imageUrl" class="avatar">
<i v-else class="el-icon-plus avatar-uploader-icon"></i>
</el-upload>
以上是我html部分代码

.el.dialog.avatar-uploader .el-upload {
border: 1px dashed #d9d9d9; border-radius: 6px; cursor: pointer; position: relative; overflow: hidden; } .el.dialog.avatar-uploader .el-upload:hover { border-color: #409EFF; }
.el.dialog.avatar-uploader-icon { font-size: 28px; color: #8c939d; width: 178px; height: 178px; line-height: 28px; text-align: center; }
.el.dialog .avatar { width: 178px; height: 178px; display: block; }
以上是我的css部分代码

结果没有出现虚线框，为什么