pre.code-toolbar {
    position: relative;
}
    pre.code-toolbar > .toolbar {
        position: absolute;
        top: .3em;
        right: .2em;
        background: #f5f2f0;
        background: rgba(224,224,224,.2);
        border-radius: .5em;
    }
        pre.code-toolbar > .toolbar a {
            color: #bbb;
            font-size: .8em;
            cursor: pointer;
            padding: 0 .5em;
        }
        pre.code-toolbar > .toolbar a:hover, 
        pre.code-toolbar > .toolbar a:focus,
        pre.code-toolbar > .toolbar a.zeroclipboard-is-hover {
            color: inherit;
        }