html {
  box-sizing: border-box;
}
img {
  max-width: 100%;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
header h1 {
  margin-top: 0;
  padding-top: 50px;
}
h1 span {
  font-size: 0.8em;
}
header {
  text-align: center;
}
.maincontent,
.picture {
  padding: 0 5px;
  margin-top: 20px;
}
.picture {
  border: 1px solid gray;
}