gt table alignment in main column.

[cassidybargell]

I am including gt tables in a Rmarkdown Tufte-style HTML. I want to align the gt tables in the center of the main column, rather than in the center of the HTML spanning both the main column and margin. I have tried using the fig.align knitr option (does not move the gt table at all) as well as tab.align command (will align the gt table all the way to the left, rather than centered in the main column: tab_options(table.align='left')). Here is a repo with an rmd that can be cloned to show the issue I am having: https://github.com/cassidybargell/gt-tufte.

I have asked this question on Stackoverflow , which includes a screenshot of the html.

Example code of a gt table being used in the Tufte-HTML:

---
title: "gt Alignment"
author: "Cassidy Bargell"
date: "6/20/2020"
output: 
  tufte::tufte_html:
    tufte_variant: "envisioned"
    
  tufte::tufte_handout: default
---

``` {r gt table}

library(gt)

tibble(subject = "Joe",
       ytreat = "13",
       ycontrol = "9",
       ydiff = "+4") %>%  
  gt()

---

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[cassidybargell]

The issue can be fixed by making your own css file. Here are the lines of code:

.gt_table {
  margin-left: 0 !important;
  margin-right: 0 !important;
  width: 55% !important;
}

Thank you to Yaodong Yu for the help! @itsyaoyu