/* for block of numbers */
.hljs-ln-numbers {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

    text-align: left;
    border-right: 1px solid;
    vertical-align: top;
    padding: 0 10px 0 0;


    /* your custom style here */
}
/* for block of code */
.hljs-ln-code {
    padding-left: 1px;
}