Infiltration-excess overland flow develops when the rate of water input on the land surface is higher than the infiltration rate.
Research studies in the 1960s and 1970s that defined generation processes of saturation-excess overland flow helped validate the variable source-area concept proposed by Hewlett and Hibbert 1967 , which still stands to this day, although McDonnell 2003 and Ambroise 2004 have recently called for a revised theory.
Linking the micro-scale process complexity to a hillslope-scale interpretation of dominant flow processes is a significant challenge, but this link across scales is a critical step in relating hydrologic processes to channel initiation.
Once the horizontal scrolling is gone, I can identify the element that is causing the issue.
A simple fix for that is to reset the grid-template-columns to 1fr and on changing it when the viewport is larger.
Whereas environments with infiltration-excess overland flow do not always exhibit flow rates that increase downslope, humid environments are more likely to favor downslope flow convergence.