What does the gt; (greater-than sign) CSS selector mean? 63 > (greater-than sign) is a CSS Combinator (Combine + Selector) A CSS selector can contain more than one simple selector Between the simple selectors, we can include a combinator There are four different combinators in CSS3: descendant selector (space) child selector (>) adjacent sibling selector (+) general sibling selector (~)
What does the ~ (tilde squiggle twiddle) CSS selector mean? The ~ selector is in fact the subsequent-sibling combinator (previously called general sibling combinator until 2017): The subsequent-sibling combinator is made of the "tilde" (U+007E, ~) character that separates two sequences of simple selectors The elements represented by the two sequences share the same parent in the document tree and the element represented by the first sequence precedes
What does an asterisk (*) do in a CSS selector? - Stack Overflow The CSS that you referenced is very useful to a web-designer for debugging page layout problems I often drop it into the page temporarily so I can see the size of all the page elements and track down, for example, the one that has too much padding which is nudging other elements out of place
css - How to force image resize and keep aspect ratio? - Stack Overflow background-position: center; } Now you can just set your div size to whatever you want and not only will the image keep its aspect ratio it will also be centralized both vertically and horizontally within the div Just don't forget to set the sizes on the css since divs don't have the width height attribute on the tag itself