pre {
    position:relative!important;
    overflow-y: auto!important;
    font: 12px "courier new";
    border: 0!important;
    color: #777!important;
    padding: .5rem!important;
    padding-top: 2rem!important;
    margin: 1.5rem 0!important;
    line-height: 1.2!important;
    white-space: pre-wrap!important;
    word-wrap: break-word!important;
    background-color: #28292f!important;
    border-radius: 0.5rem!important;
    box-shadow: 0 2px 5px rgba(0,0,0,.2);
}
pre::before {
    content: " ";
    position: absolute;
    -webkit-border-radius: 50%;
    border-radius: 50%;
    background: #888;
    width: 10px;
    height: 10px;
    top: 0;
    left: 10px;
    margin-top: 11px;
    -webkit-box-shadow: 16px 0 #888, 32px 0 #888;
    box-shadow: 16px 0 #888, 32px 0 #888;
    transition-duration: .3s;
}
pre code {
    display: block;
    min-height: 40px;
    max-height: 320px;
    overflow: auto;
    padding: .5rem;
    background: #eee;
}