Legacy. For a long time IE could be depended on to either a) not support a standard b) claim to support a standard but do it wrong or differently from anyone e

Legacy. For a long time IE could be depended on to either a) not support a standard b) claim to support a standard but do it wrong or differently from anyone else or c) have equivalent behavior to a standard but with proprietary extensions. Also, Microsoft bundled IE with Windows to leverage its desktop monopoly power. https://en.wikipedia.org/wiki/History_of_Internet_Explorer#United_States_v._Microsoft https://en.wikipedia.org/wiki/History_of_Internet_Explorer#U...