_x000D_
$(window).keypress("c", function(e) {_x000D_
if (!e.ctrlKey)_x000D_
return;_x000D_
_x000D_
$("div").show();_x000D_
});
_x000D_
/*https://gist.github.com/jeromyanglim/3952143 */_x000D_
_x000D_
kbd {_x000D_
white-space: nowrap;_x000D_
color: #000;_x000D_
background: #eee;_x000D_
border-style: solid;_x000D_
border-color: #ccc #aaa #888 #bbb;_x000D_
padding: 2px 6px;_x000D_
-moz-border-radius: 4px;_x000D_
-webkit-border-radius: 4px;_x000D_
border-radius: 4px;_x000D_
-moz-box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2), 0 0 0 1px #ffffff inset;_x000D_
-webkit-box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2), 0 0 0 1px #ffffff inset;_x000D_
box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2), 0 0 0 1px #ffffff inset;_x000D_
background-color: #FAFAFA;_x000D_
border-color: #CCCCCC #CCCCCC #FFFFFF;_x000D_
border-style: solid solid none;_x000D_
border-width: 1px 1px medium;_x000D_
color: #444444;_x000D_
font-family: 'Helvetica Neue', Helvetica, Arial, Sans-serif;_x000D_
font-size: 11px;_x000D_
font-weight: bold;_x000D_
white-space: nowrap;_x000D_
display: inline-block;_x000D_
margin-bottom: 5px;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div style="display:none">_x000D_
<kbd>CTRL</kbd> + <kbd>C</kbd> detected !_x000D_
</div>
_x000D_