CSSOM
The tree-shaped model of all CSS rules, with every node's styles resolved after the cascade and inheritance. The style half of what gets rendered.
body { font-size: 16px } becomes a computed style nodes can inherit.
body {
font: 16px;
color: #222;
}
stylesheet
body
font: 16px
color: #222
Tap the example to replay it · press and hold to slow it down