sbp

@font-face {
  font-family: 'Open Sans';
  font-style: italic;
  font-weight: 400;
  src: local('Open Sans Italic'), local('Open-Sans-Italic'),
  url('OpenSans-Italic.woff') format('woff'),
  url('OpenSans-Italic.ttf') format('truetype');
}

@font-face {

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent