runApp(shinyApp(
ui = fluidPage(
tags$style(type='text/css', ".selectize-input { font-size: 32px; line-height: 32px;} .selectize-dropdown { font-size: 28px; line-height: 28px; }"),
selectInput("test","Test", 1:5)
),
server = function(input, output, session) {
}
))now find the exact css element "address" of this select box using e.g. F12 - inspect element in your browser and pointing to it, then you make a new css rule for this specific element
example: for a select box named cmbMain a css rule in an external css file could be like this :
html body div.container-fluid div.container-fluid div.row-fluid h4 select#cmbMain.shiny-bound-input{width: 600px;margin-bottom: 5px;border-radius:30px;height: 50px;
line-height:50px;}