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How to center absolute div horizontally using CSS?

I've a div and want it to be centered horizontally - although I'm giving it margin:0 auto; it's not centered... 8 Answers...
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How do I include negative decimal numbers in this regular expression?

...\d*(\.\d+)?$ I verified it in Rubular with these values: 10.00 -10.00 and both matched as expected. share | improve this answer | follow | ...
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?

... what if I return a local list from a function and use that in the calling function. That is def fn_1(): lst = [] lst.append(1) lst.append(2) return lst and def fn_2(): print(fn_1()) Will the order be same ALWAYS irrespective of how many times or where ever I use fn_1() ?...
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Modify SVG fill color when being served as Background-Image

... a resource server side that outputs your svg according to GET parameters, and you serve it on a certain url. Then you just use that url in your css. Because as a background img, it isn't part of the DOM and you can't manipulate it. Another possibility would be to use it regularly, embed it in a p...
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Convert NaN to 0 in javascript

... Thanks mate, have selected and modified a bit this for myself a = a*1 || 0 – Somebody Dec 7 '11 at 17:22 ...
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What is the best way to initialize a JavaScript Date to midnight?

... The setHours method can take optional minutes, seconds and ms arguments, for example: var d = new Date(); d.setHours(0,0,0,0); That will set the time to 00:00:00.000 of your current timezone, if you want to work in UTC time, you can use the setUTCHours method. ...
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Creating a daemon in Linux

In Linux I want to add a daemon that cannot be stopped and which monitors filesystem changes. If any changes are detected, it should write the path to the console where it was started plus a newline. ...
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What is “:-!!” in C code?

... effect, a way to check whether the expression e can be evaluated to be 0, and if not, to fail the build. The macro is somewhat misnamed; it should be something more like BUILD_BUG_OR_ZERO, rather than ...ON_ZERO. (There have been occasional discussions about whether this is a confusing name.) You...
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How do I round to the nearest 0.5?

I have to display ratings and for that i need increments as follows: 9 Answers 9 ...
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Use CSS3 transitions with gradient backgrounds

...h a background gradient, you have to set an opacity on a container element and 'transition` the opacity. (There have been some browser releases that supported transitions on gradients (e.g IE10. I tested gradient transitions in 2016 in IE and they seemed to work at the time, but my test code no lo...