The last date on the x-axis of my c3 chart is cut off.

Since space is tight I wish to re-align the date rather than create more space for the date to print.
Using Chrome Inspector I can manually adjust the text-anchor: middle to text-anchor: end
and that seems to work.

However, I do not understand how to do this with css.
Here's my R Script and related css though I don't think that R is relevant to the issue here.
R Script
library(shiny)
library(c3)
data <- data.frame(a = abs(rnorm(20) * 10),
b = abs(rnorm(20) * 10),
date = seq(as.Date("2014-01-01"), by = "month", length.out = 20))
ui <- fluidPage(
includeCSS("c3.css"),
c3Output("chart", height = "100%")
)
server <- function(input, output, session) {
output$chart <- renderC3({
data %>%
c3(x = 'date') %>%
tickAxis('x', count = 5, format = '%Y-%m-%d')
})
}
shinyApp(ui, server)
css
.c3-line {
stroke-width: 4px !important;
}
.c3-axis-x-label {
text-anchor: end;
}
The last date on the x-axis of my c3 chart is cut off.
Since space is tight I wish to re-align the date rather than create more space for the date to print.
Using Chrome Inspector I can manually adjust the
text-anchor: middletotext-anchor: endand that seems to work.
However, I do not understand how to do this with css.
Here's my R Script and related css though I don't think that R is relevant to the issue here.
R Script
css