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I am new to WP with little knowledge of code. I am using Twenty Twelve and have managed to create a child theme (minus the header image for some reason). One of my widgets does not fit into the sidebar area so I would like to make it bigger.

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Does your child theme have a CSS file? If it does, you can make the change there. If not, you can create a style.css in your child theme, containing the change.

To make the Twenty Twelve sidebar wider, you'll probably need some CSS changes to the following two classes:

.site-content {width:[insert new width here]}
.widget-area {width:[insert new width here]}
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As Otto commented, you'll probably want to keep an eye on the media queries to make sure you're edits work at all resolutions. – clark Nov 3 '12 at 19:33

The style.css defines the width of the .widget-area as 26.041666667% (for devices that have a minimum width of 600px). You can change this with some custom CSS in either a child theme, or using the "Edit CSS" function in the Jetpack plugin, or in the theme's style.css file directly.

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Many thanks for your help. Do you know how far down the file or specifically which line number this is at? Not usre what a jetpack plugin and am not sure if I have a CSS file in my child theme (really am new to this). I think I will chance making the change directly. – Sean Montgomery Nov 3 '12 at 20:18
Also - if I do increase the width of the sidebar, I presume I will have to reduce the width of the content area - can you confirm which line this is at? Thanks – Sean Montgomery Nov 3 '12 at 20:20
Found the commands - reduced content area and increased widget area but without effect. Any ideas on what I am doing wrong? Thanks – Sean Montgomery Nov 3 '12 at 20:36
What code did you find, where did you find it and what did you modify exactly? Please post the code. – Brad Dalton May 7 '14 at 7:32

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