R Shiny's shinyalert "X" image issue

Question

I am working on an R shiny app that uses shinyalert to inform the user of errors. The function works great, but for some reason the "X" image is distorted. I'm assuming this is a possible css issue. Hoping someone can shed some light on this issue and possible solutions!

Code:

shinyalert::shinyalert(title = "Error!", 
                                       text = e$message, 
                                       type = "error")

Screen shot: