src/qt/res/assets/css/font-awesome-buttons.min.css
.button-icon{width:33px;padding:0}.button-icon .fa{width:33px;line-height:33px;vertical-align:top;border:1px solid #ededed;text-align:center;margin-bottom:5px;border-radius:5px}td .button-icon{width:32px;height:32px;margin-bottom:0}td .button-icon .fa{width:28px;line-height:28px;font-size:1rem}