Documentation css, html, javascript en ligne ou hors ligne

Comme je l'oublie toujours, je me note le paramétrage possible ici :

Possible Values

top left, top center, top right, center left, center center, center right, bottom left, bottom center, bottom right: If you only specify one keyword, the second value will be “center”.

x-% y-%: The first value represents the horizontal position. The second value represents the vertical position. The top left corner is represented as 0% 0%. The right bottom corner is denoted as 100% 100%. If you specify only one value, the other one will be 50%.

x-pos y-pos: The first value represents the horizontal position. The second value represents the vertical position. The top left corner is 0 0. Units can be pixels (such as in 0px 0px) or any other CSS units. If you only specify one value, the other value will be 50%. You can mix % and positions.

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