/* You can either copy the below and paste it between style tags on your HTML page, OR you can copy this to a file and name it .css and link it from your HTML page. */

:root {
  --header-bg:#F1F1F1;
  --nav-bg:#F2F2F2;
  --article-bg:#EDEDEF;
  --border-color:#E0E0E0;
  --sidebar-text-color:#6F7A79;
  --article-text-color:#625F5F;
  --article-heading-color:#929292;
  --nav-link-color:#5f758c;
  --darker-border-color:#C6C6C6;
}
html, body {
  padding:0;
  margin:0;
}
body {
  font-size:12px;
}
body a {
  color:var(--nav-link-color);
}

header, nav {
  max-width:100%;
}
aside {
  width:250px;
  margin-top:30px;
}
.flex {
  display:flex;
  max-width:900px;
}
nav {
  height:auto;
  margin-bottom:10px;
  background-color:var(--nav-bg);
}
header {
  max-height:200px;
  height:200px;
  background-color:var(--header-bg);