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How to remove focus border (outline) around text/input boxes? (Chrome) [duplicate]

Can anyone explain how to remove the orange or blue border (outline) around text/input boxes? I think it only happens on Chrome to show that the input box is active. Here's the input CSS I'm using: ...
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How to check if a file is a valid image file?

I am currently using PIL. 11 Answers 11 ...
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Extracting just Month and Year separately from Pandas Datetime column

I have a Dataframe, df, with the following column: 11 Answers 11 ...
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PHP/MySQL insert row then get 'id'

The 'id' field of my table auto increases when I insert a row. I want to insert a row and then get that ID. 10 Answers ...
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Using Default Arguments in a Function

I am confused about default values for PHP functions. Say I have a function like this: 12 Answers ...
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Return a `struct` from a function in C

Today I was teaching a couple of friends how to use C struct s. One of them asked if you could return a struct from a function, to which I replied: "No! You'd return pointers to dynamically malloc ed struct s instead." ...
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sed edit file in place

I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a d...
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How to ALTER multiple columns at once in SQL Server

I need to ALTER the data types of several columns in a table. 13 Answers 13 ...
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How do I alter the position of a column in a PostgreSQL database table?

I've tried the following, but I was unsuccessful: 9 Answers 9 ...
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self referential struct definition?

I haven't been writing C for very long, and so I'm not sure about how I should go about doing these sorts of recursive things... I would like each cell to contain another cell, but I get an error along the lines of "field 'child' has incomplete type". What's up? ...