Thelist-style-type property specifies the appearance of a list item element. Because it is the only property that defaults to display:list-item, this is usually a <li> element, but can be any element with this display value.
The mask-sizeCSS property specifies the sizes of the mask images. The size of the image can be fully or partially constrained in order to preserve its intrinsic ratio.
This value for CSSbackground-image lets you use a portion of a larger image as a background. This allows you to, for example, use different parts of one larger image as backgrounds in different parts of your content.
The CSSorder property specifies the order used to lay out flex items in their flex container. Elements are laid out in the ascending order of the order value. Elements with the same order value are laid out in the order in which they appear in the source code.
The orphansCSS property refers to the minimum number of lines in a block container that must be left at the bottom of the page. This property is normally used to control how page breaks occur.
The CSSoutline property is a shorthand property for setting one or more of the individual outline properties outline-style, outline-width and outline-color in a single declaration. In most cases the use of this shortcut is preferable and more convenient.