overflow-block is a CSS media feature that can be used to check how the output device handles content that overflows the viewport along the block axis. Enumerated values Value Meaning none scroll optional-paged paged Specifications Specification Status Comment Media Queries Level 4The definition of 'overflow-block' in that specification. Working Draft Added in Media Queries Level 4 Browser compatibility Desktop Mobile Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari Basic support ? ? ? ? ? Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Basic support ? ? ? ? ?