The box-sizing property is used to alter the default CSS box model used to calculate width and height of the elements. It is possible to use this property to emulate the behavior of browsers that do not correctly support the CSS box model specification.
The hyphensCSS property tells the browser how to hyphenate words when line-wrapping. You can prevent hyphenation entirely, control when the browser should hyphenate, or let the browser control when to hyphenate.