# How to change CSS using javascript

**URL:** <https://forum.kirupa.com/t/how-to-change-css-using-javascript/328455>\
**Category:** Uncategorized\
**Created:** [May 18, 2012, 7:47am UTC](https://forum.kirupa.com/t/how-to-change-css-using-javascript/328455 "2012-05-18T07:47:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [May 18, 2012, 7:47am UTC](https://forum.kirupa.com/t/how-to-change-css-using-javascript/328455/1 "2012-05-18T07:47:32Z")

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i want to change the font-size of grid row number using javascript. the font-size in the following css is used for row numbers. how can i access it using JS?

.x-grid3-td-numberer div {  
font-size: 11px;  
font-family: “segoe ui”, tahoma, arial, sans-serif;  
color: #444444;  
padding: 3px 0px 0 5px !important;  
}