Introduction

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library(knitr)
library(kableExtra)
dt <- mtcars[1:10, 1:8]
aaa <- getFromNamespace("is_html_output", "knitr")
aaa()
## [1] TRUE
kable(dt[1:5,], format = "html") %>%
  kable_styling(c("striped")) %>%
  add_indent(c(3, 5)) %>%
  add_indent(5)
mpg cyl disp hp drat wt qsec vs
Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0
Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0
Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1
Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1
Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0
kable(dt, format = "html", caption = "aaa") %>%
  kable_styling("striped", full_width = F, font_size = 5) %>%
  group_rows("Group 1", 4, 7) %>%
  group_rows("Group 2", 8, 10)
aaa
mpg cyl disp hp drat wt qsec vs
Mazda RX4 21.0 6 160.0 110 3.90 2.620 16.46 0
Mazda RX4 Wag 21.0 6 160.0 110 3.90 2.875 17.02 0
Datsun 710 22.8 4 108.0 93 3.85 2.320 18.61 1
Group 1
Hornet 4 Drive 21.4 6 258.0 110 3.08 3.215 19.44 1
Hornet Sportabout 18.7 8 360.0 175 3.15 3.440 17.02 0
Valiant 18.1 6 225.0 105 2.76 3.460 20.22 1
Duster 360 14.3 8 360.0 245 3.21 3.570 15.84 0
Group 2
Merc 240D 24.4 4 146.7 62 3.69 3.190 20.00 1
Merc 230 22.8 4 140.8 95 3.92 3.150 22.90 1
Merc 280 19.2 6 167.6 123 3.92 3.440 18.30 1