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.
The outline-color CSS property sets the color of the outline of an element. An outline is a line that is drawn around elements, outside the border edge, to make the element stand out.
The outline-offset CSS property is used to set space between an outline and the edge or border of an element. An outline is a line that is drawn around elements, outside the border edge.
The outline-width CSS property is used to set the width of the outline of an element. An outline is a line that is drawn around elements, outside the border edge, to make the element stand out:
The padding property sets the padding space on all sides of an element. The padding area is the space between the content of the element and its border. Negative values are not allowed.
The padding-bottomCSS property of an element sets the height of the padding area at the bottom of an element. The padding area is the space between the content of the element and its border. Contrary to margin-bottom values, negative values of padding-bottom are invalid.
The padding-leftCSS property of an element sets the padding space required on the left side of an element. The padding area is the space between the content of the element and it's border. A negative value is not allowed.
Thepadding-rightCSS property of an element sets the padding space required on the right side of an element. The padding area is the space between the content of the element and its border. Negative values are not allowed.
The padding-topCSS property of an element sets the padding space required on the top of an element. The padding area is the space between the content of the element and its border. Contrary to margin-top values, negative values of padding-top are invalid.
The perspectiveCSS property determines the distance between the z=0 plane and the user in order to give to the 3D-positioned element some perspective. Each 3D element with z>0 becomes larger; each 3D-element with z<0 becomes smaller. The strength of the effect is determined by the value of this property.