a,
a:active,
a:hover,
a:visited {
    color: blue;
}

pre code {
    display: block;
    background-color: #d4d6db;
    padding: 15px;
    border-radius: 10px
}

code {
    background-color: #d4d6db;
    padding: 2px;
    padding-left: 4px;
    padding-right: 4px;
    border-radius: 4px
}