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At one point, a long time ago I was able to tweak a value that would increase the size of the X in the tabs. That helps since my hands tremble a lot

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Can you tell me how I can increase the size of the x in the Tab used to close the tab? Last time I did this "fix" was when there was a settings/config page to set all sorts of things. Doesn't seem to exist anymore. Please send the response to mileswade@ymail.com or to wmileswade@yahoo.com Thank you.

Can you tell me how I can increase the size of the x in the Tab used to close the tab? Last time I did this "fix" was when there was a settings/config page to set all sorts of things. Doesn't seem to exist anymore. Please send the response to mileswade@ymail.com or to wmileswade@yahoo.com Thank you.

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Add code to the userChrome.css file below the default @namespace line.

The customization files userChrome.css (interface) and userContent.css (websites) are located in the chrome folder in the Firefox profile folder.

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

.tab-close-button .toolbarbutton-icon,
.tabs-closebutton .toolbarbutton-icon {
height: 25px !important;
width: 25px !important;
margin:-4px 0px !important; /* use this if you want to adjust the top and bottom margins */
}