Center a responsive absolutely positioned element
32230
Center an element with "absolute" position and undefined width in CSS?
111362
Centering an image within a div
130907
CSS horizontal centering of a fixed div?
101220
Vertically align an image inside a div with responsive height
29431
How to move an object's origin to the center of its bounding box?
51163
How to vertically center  inside the parent element with CSS?
104963
How to center an element in the middle of the browser window?
93862
offsetting an html anchor to adjust for fixed header
102230
How can I vertically center an image with an anchor inside a div?
63734
How to center an unordered list?
140755
Automatic vertical alignment of a single float on a dedicated page
5984
How to center an element horizontally and vertically
68547
How can I center text (horizontally and vertically) inside a div block?
133004
How to make an element width: 100% minus padding?
114223
Centering in the \align* environment
119899
Absolutely true centred background image
92312
Centering my body to the menu and the rest of the page