Why sometimes hr() has a bad behavior in Shiny? I use the same code but the lines are different and sometimes one of then does not appears?
The code used:
                            column(12, 
                                   hr(style = "border-top: 1px solid #000000;"),
                                   h3("Input de dados", style = "align:center;text-align:center"),
                                   hr(style = "border-top: 1px solid #000000;"),
                                   headerPanel(""),
                            ),
