compponent part
      <el-upload      action=""      list-type="picture-card"      :on-preview="handlePictureCardPreview"      :on-remove="handleRemove"      :http-request="imgUpload"      :limit="5"      :on-exceed="handleExceed"    >      <i class="el-icon-plus"></i>    </el-upload>
// style part

/deep/ .el-upload--picture-card {
width: 100px;
height: 100px;
}
/deep/ .el-upload {
width: 100px;
height: 100px;
line-height: 100px;
}
/deep/ .el-upload-list--picture-card .el-upload-list__item {
width: 100px;
height: 100px;
line-height: 100px;
}
/deep/ .el-upload-list--picture-card .el-upload-list__item-thumbnail {
width: 100px;
height: 100px;
line-height: 100px;
}
/deep/ .avatar {
width: 100px;
height: 100px;
}