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Can I set an opacity only to the background image of a div?

...ndex: 1; } .myDiv .bg { position: absolute; z-index: -1; top: 0; bottom: 0; left: 0; right: 0; background: url(test.jpg) center center; opacity: .4; width: 100%; height: 100%; } See test case on jsFiddle :before and ::before pseudo-element Another trick i...
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Why can't I center with margin: 0 auto?

I have a #header div that is 100% width and within that div I have an unordered list. I have applied margin: 0 auto to the unordered list but it won't center it within the header div. ...
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space between divs - display table-cell

....table { display: table; border-collapse: separate; border-spacing: 10px; } .row { display:table-row; } .cell { display:table-cell; padding:5px; background-color: gold; } JSBin Demo Any other option? Well, not really. Why? margin property is not applicable to display: table-cell...
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How can I calculate the time between 2 Dates in typescript

... 160 Use the getTime method to get the time in total milliseconds since 1970-01-01, and subtract thos...
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Is there XNOR (Logical biconditional) operator in C#?

...te also that this doesn't generalize to bitwise operations, where you want 0x1234 XNOR 0x5678 == 0xFFFFBBB3 (assuming 32 bits). For that, you need to build up from other operations, like ~(A^B). (Note: ~, not !.) share ...
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How do I get the row count of a pandas DataFrame?

...e=[2**k for k in range(25)], kernels=[ lambda data: data.shape[0], lambda data: data[0].count(), lambda data: len(data.index), ], labels=["data.shape[0]", "data[0].count()", "len(data.index)"], xlabel="data rows" ) EDIT: As @Dan Allen noted in the comments l...
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SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu

...n other formats like mm/dd/yyyy (usually works). Specifying the date as 30/12/2013 resulted in the error for me. However, specifying it as mm/dd/yyyy format worked. If you need to convert your input the you can try looking into the CONVERT method. Syntax is CONVERT(VARCHAR,@your_date_Value,103...
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Running a cron job at 2:30 AM everyday

How to configure a cron job to run every night at 2:30? I know how to make it run at 2, but not 2:30. 6 Answers ...
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How to generate a random integer number from within a range

...rong. Returning rand() % N does not uniformly give a number in the range [0, N) unless N divides the length of the interval into which rand() returns (i.e. is a power of 2). Furthermore, one has no idea whether the moduli of rand() are independent: it's possible that they go 0, 1, 2, ..., which is...
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Android dex gives a BufferOverflowException when building

... 230 No need to downgrade the build tools back to 18.1.11, this issue is fixed with build tools 19.0....