ESRI leaflet missing tiles

Question

Here's the page I'm working on. Just click on "Forecasts" tab. On Chrome and FF browsers. http://www.weather.gov/mfr/dot

Once on the forecasts tab, you'll see a map below the text links. Much of the map is grey upon loading. I saw that this can happen if CSS is not loaded, but I have the latest CSS loaded on there. Can anyone help with this problem?

Thanks!

Answer 1

since the map container is being created dynamically, you need to call map.invalidateSize() when the 'Forecast' panel is toggled.