body {
  max-width: 960px;
  margin: 0 auto;
  font-family: Arial, Helvetica, sans-serif;
  padding: 0 15px; }
  @media only screen and (min-width: 48em) {
    body {
      display: grid;
      grid-template-columns: 250px 1fr;
      grid-gap: 20px; } }

header {
  padding: 10px; }
  @media only screen and (min-width: 48em) {
    header {
      padding: 20px;
      grid-column: 1 / span 2; } }

img {
  width: 100%;
  height: auto; }

a {
  color: black; }

aside {
  position: relative; }
  @media only screen and (min-width: 48em) {
    aside {
      grid-column: 1 / span 1; } }

.profile {
  position: sticky;
  top: 0; }

.logo {
  display: block; }
  @media only screen and (min-width: 48em) {
    .logo {
      transform: translateX(-30px); } }
  .logo img {
    width: 80px;
    height: auto; }
    @media only screen and (min-width: 48em) {
      .logo img {
        width: 100px; } }

@media only screen and (min-width: 48em) {
  main > h2 {
    margin-top: 0; } }