Web pages, such as a captive portal web page, may be rendered on an electronic display such as a display of a television that is removably coupled to a content streaming device. The web pages may be rendered using a customized user interface (UI) of a captive portal application executable on the content streaming device. The UI of the captive portal application may be customized for viewing at a longer distance than a typical distance between a user and a handheld mobile device. A computer-executable script may be embedded or otherwise associated with source code of a web page to cause a focus outline of a selectable UI element to be displayed more prominently when a user navigates to the selectable UI element using, for example, a remote control device configured to communicate with the content streaming device.