append_css_style.js

var css = '.QuickViewBtn { display: none !important; }',
head = document.head || document.getElementsByTagName('head')[0],
style = document.createElement('style');
style.type = 'text/css';
if (style.styleSheet){
    style.styleSheet.cssText = css;
} else {
    style.appendChild(document.createTextNode(css));
}
head.appendChild(style);