html {
  font-family: "Lucida Sans", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  background-color: lightblue;
}
menu {
  padding: 6px;
}
main {
  display: flex;
  flex: auto;
  flex-direction: row;
  background-color: white;
}
header {
  padding-top: 8px;
  padding-bottom: 16px;
  height: 60px;
}

footer {
  height: 50px;
}
article {
  flex: 2;
  overflow-y: auto;
  padding: 0 !important;
}
aside {
  flex: 1;
  overflow-y: auto;
}