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arantius/gm-addstyle.js

Created February 22, 2018 16:47
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GM_addStyle
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gm-addstyle.js
function GM_addStyle(aCss) {
'use strict';
let head = document.getElementsByTagName('head')[0];
if (head) {
let style = document.createElement('style');
style.setAttribute('type', 'text/css');
style.textContent = aCss;
head.appendChild(style);
return style;
}
return null;
};
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