.code-block {
    position: relative;
}

.md-clipboard {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 1;
    width: 20px;
    height: 20px;
    cursor: pointer;
    opacity: 0.5;
}
.md-clipboard:hover {
    opacity: 1;
}

@media print {
    .md-clipboard {
        display: none;
    }
}