title: How to set the font size of data label in fviz_pca_var of factoextra
body: <p>When I submitted a paper to a journal, the journal asked me to set the font size to  7.5, however when I　used the following code, only the axis text changed, the label size remained unchanged,</p>
  
  <pre><code>    library(ggplot2)
      library(FactoMineR)
      library(factoextra)
  
      irispca &lt;- PCA(iris,quali.sup = 5)
      fviz_pca_var(irispca)+
     theme(text = element_text(size = 7.5),
           axis.title = element_text(size = 7.5),
           axis.text = element_text(size = 7.5)
           )
  </code></pre>
  
  <p>Any suggestion is appreciated to  tell what code should I used to change the label size?</p>
  
  <p><a href="https://i.stack.imgur.com/KGYGf.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/KGYGf.jpg" alt="enter image description here"></a></p>