Remove noise when printing with GitHub

Github print screen

var styleEl = document.createElement('style');
styleEl.type = 'text/css';
styleEl.innerHTML = '@media print {  body {        min-width: 0;  }  .header, .gh-header-actions, .repository-sidebar, #wiki-rightbar, .site-footer {        display: none;  }  .container, .repository-with-sidebar .repository-content, .repository-with-sidebar.with-full-navigation .repository-content {        width: auto;        float: none;  }  .has-rightbar #wiki-body, #wiki-body .markdown-body {        margin-right: 0;  }  a {        color: #333;        text-decoration: underline;  }  div.header, div.pagehead, div.file-navigation, div.commit-tease, div.file-header {        display: none;  }  div.file, div.container {        margin: 0;  }  div.file {        border: 0;  }}';
document.documentElement.appendChild(styleEl);