picocli/docs/quick-guide-docinfo.html

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<!-- Copy to clipboard button in sourc code listings -->

<style>
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     display: block;
 }

 .clipboard {
     display: none;
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     font-size: .75em;
     text-transform: uppercase;
     font-weight: 500;
     padding: 6px;
     color: #999;
     position: absolute;
     top: .425rem;
     right: .5rem;
     background: transparent;
 }

 code + .clipboard {
    top: -0.05rem !important;
     right: 3rem !important;
 }

 .clipboard:hover, .clipboard:focus, .clipboard:active {
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     background-color: #eee9e6;
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</style>
<script>
$(function() {

var pre = document.getElementsByTagName('pre');
for (var i = 0; i < pre.length; i++) {
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}).on('success', function(e) {
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});
</script>