Javascript responsive cubic feet calculator

Hi

Sorry if in wrong place but thought css would be better place as asking about the responsive side of it, the actual coding of the calculator I can do

I need to create a Javascript cubic feet calculator like the one on this site but I need it to be responsive, theirs is using a table but is not responsive

http://www.kirtley.co.uk/removals-calculator.html

Can anyone help please

Thank you in advance

I have sorted the responsive issue but the answer displays in a input field which is ok but the text don't fit in it, I have tried to force the text to go onto two lines but don't seem to be doing it, the code I have is below

Code:

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<input type="text" name="answer" style="width: 238% !important; height: 50px; word-break: break-all;"/>

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Sorry sussed it, I used textarea instead