hr {
    border-top: 1px solid #aaa;
    margin-top: 10px;
    margin-bottom: 10px;
}

.highlight {
position: relative;
}

.highlight pre {
background-color:#f8f8f8 !important;
}

p> strong {
    text-align: center !important;
}
.highlight .ln{
    display: block;
    float: left;
    user-select: none;
    padding-right: 8px;
    text-align: right;
}

.highlight-copy-btn {
position: absolute;
top: 7px;
right: 7px;
border: 0;
border-radius: 4px;
padding: 1px;
font-size: 0.8em;
line-height: 1.8;
color: #fff;
background-color: #aaa;
min-width: 55px;
text-align: center;
}

.highlight-copy-btn:hover {
background-color: #999;
}