如何在Rmarkdown中调整此表的大小？

install.packages("kableExtra")
library(kableExtra)

library(kableExtra)

data <- data.frame(
  Column1 = c("A", "B", "C"),
  Column2 = c(1, 2, 3)
)

kable(data) %>%
  kable_styling(bootstrap_options = c("striped", "hover"), full_width = FALSE) %>%
  column_spec(1, width = "3cm") %>%
  column_spec(2, width = "2cm")

<table style="width:50%;">
  <tr>
    <th>Column1</th>
    <th>Column2</th>
  </tr>
  <tr>
    <td>A</td>
    <td>1</td>
  </tr>
  <tr>
    <td>B</td>
    <td>2</td>
  </tr>
  <tr>
    <td>C</td>
    <td>3</td>
  </tr>
</table>

<style>
  .my-table {
    width: 50%;
  }
</style>

<table class="my-table">
  <tr>
    <th>Column1</th>
    <th>Column2</th>
  </tr>
  <tr>
    <td>A</td>
    <td>1</td>
  </tr>
  <tr>
    <td>B</td>
    <td>2</td>
  </tr>
  <tr>
    <td>C</td>
    <td>3</td>
  </tr>
</table>