html,
body,
main,
header,
footer,
nav,
h1,
h2,
h3,
p,
img,
ul,
li {
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
}

#content {
  background-color: rgba(255, 255, 255, 0.4);
  width: 100%;
  min-height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

header,
main,
footer {
  width: 100%;
  flex-shrink: 0;
}

body {
  background-color: burlywood;
}

h1,
h2,
h3 {
  text-align: center;
  margin-top: 10px;
  margin-bottom: 10px;
}

h1 {
  font-size: 50px;
  margin: 10px 0;
}

h2 {
  font-size: 30px;
  margin: 20px 0;
}

h3 {
  font-size: 20px;
  margin: 20px 0;
}

p {
  padding: 10px;
}

img {
  width: 100%;
  margin: 20px 0 5px;
}

header h1 {
  border-top: double;
  border-bottom: double;
}

main {
  flex-grow: 1;
}

footer {
  border-top: double;
}

nav {
  text-align: center;
}

ul {
    list-style: none;
    padding: 0px;
}

li:before {
  content: "🥚";
}

li {
  padding: 10px 0;
}

.attribute {
  font-size: 16px;
  font-weight: bold;
  padding: 0;
  text-align: right;
}

@media only screen and (min-width: 600px) {
  #content {
    width: 40em;
    padding: 0px 10px;
  }
}

@media only screen and (min-width: 1000px) {
  #content {
    width: 50em
  }
}