What to change
Ask your supplier to keep long popup content scrollable and all its actions reachable when the available screen height is small.
A worked example
Illustrative example
A visitor reads a long explanation in a panel, reaches its final confirmation control and can still return to the beginning without moving the page behind it.
Why this matters to your practice
Long explanations often outgrow the space available inside a popup. The visitor must still be able to read the ending and reach the final action. Ask your supplier to demonstrate the longest real content on a short screen, with larger text and any expanded help visible. Watch which area scrolls: moving the page behind the popup is unlikely to help. If the panel becomes cumbersome, consider whether a normal page would present the information more comfortably.
A practical review example
A short information panel may become much longer after a help section opens or a correction appears. Ask your supplier to demonstrate the longest real version on a phone and with enlarged text. Scroll to the ending, then reach its final action by keyboard. Watch that the panel itself moves usefully rather than the dimmed page behind it. The visitor should also retain a clear closing route, with any fixed popup header or footer leaving the focused content visible rather than covering it.
How to check the result
Accept when all popup information and actions are reachable with a coherent scroll experience at the agreed supported sizes.
A mistake to avoid
Setting a maximum height without arranging a usable overflow area can simply cut off the content that no longer fits.
Turn reading into a next step
Your action checklist
Work through these checks with your team or supplier. Tick the ones you have resolved and leave unknowns open.
Record what you know, what is still missing and the answer you need from your team or supplier.
Use project decisions only, without personal, patient or confidential details. Entries stay in this page and are not submitted to Kay & Co. Copy or download before leaving; this page does not save your notes.
Further reading
These sources provide background for the topic. The practice examples and checklist are illustrative planning suggestions from Kay & Co.
Related guides
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