Xaringan:在两列布局中的两列之一中居中图像

Xaringan: center image within one of two columns in a two columns layout

我正在使用双栏布局,我想知道是否可以将图像居中 在第二栏 内。

这是 YAML:

---
title: "Title"
subtitle: 
author: 
date: " </br> `r Sys.Date()`"
output:
  xaringan::moon_reader:
    lib_dir: libs
    css: ["default", "custom.css", "custom-fonts.css"]
    nature:
      beforeInit: "http://www.jvcasillas.com/ru_xaringan/js/ru_xaringan.js"
      highlightStyle: github
      highlightLines: true
      countIncrementalSlides: false
      ratio: "16:9"
---

幻灯片:

---
# Introduction

.pull-left[
- One bullet.
-  Another bullet.
- another 
- another
- another

]
.pull-right[

<img src="img/book.jpg" alt="drawing" width="200"/>

]

这是它的样子:

如您所见,图像“悬挂”在第二列的左上角。我想知道是否可以将它放在第二列的中心。

遵循Tomas Capretto的建议:

---
# Introduction

.pull-left[
- One bullet.
-  Another bullet.
- another 
- another
- another

]

.pull-right[ .center[ <img src="img/book.jpg" alt="drawing" width="200"/> ] ]

结果如下: