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Margin property in css

I changed the value of margin property to 90 and I found it is aligned to left and if I change furthur i cannot see difference. i am not able to understand why is this happening.Please help me on this behaviour. Thanks in advance.


max-width: 940px; margin : 90 auto; }

Jesus Mendoza
Jesus Mendoza
23,288 Points

You need to add a pixel, percentage, em property to 90

1 Answer

Erik McClintock
Erik McClintock
45,783 Points


Whenever you're assigning a value to something, make sure you include the type that you want to associate with that value. In this case, for example, you have:

wrapper {
    margin: 90 auto; /* what is 90? */

You would want something like this:

wrapper {
    margin: 90px auto; /* note that here, we specify that 90 is a pixel value by using "px" after it */