body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: burlywood;

  padding-inline-start: 20%;
  padding-inline-end: 20%;
}

#banner {
  font-size: xx-large;
  font-style: italic;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
}

#banner ::before {
  background-image: "/favicon.ico";
}

.box {
  background-color: bisque;
  display: inline-block;
  padding-inline-start: 10px;
  padding-inline-end: 10px;
  padding-block-end: 10px;
  border-radius: 5px;
}

#main {
  display: flex;
}

#content {
  margin-inline-start: 10px;
  width: max-content;
  flex-grow: 1;
}

#footer {
  margin-top: 10px;
  text-align: center;
}

#footer img {
  margin-inline-end: 1em;
}

#navigation h1 {
  font-size: large;
}

#navigation h2 {
  font-size: medium;
}

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

#navigation ul ul {
  list-style: none;
  padding: 0px;
  margin: 0px;
  margin-inline-start: 1em;
}

#navigation a {
  text-decoration: none;
  color: inherit;
  white-space: nowrap;
}

#navigation a:hover {
  text-decoration: underline;
}

table,
th,
td {
  border: 1px solid;
  border-collapse: collapse;
}

img {
  max-width: 100%;
}

#menu-icon-container {
  align-self: flex-start;
  display: none;
  color: chocolate;
  background-color: currentColor;
  border: currentColor solid;
  border-radius: 3px;
  height: 0.8em;
  width: 0.8em;
  position: relative;
  text-align: start;
}

#menu-icon,
#menu-icon:before,
#menu-icon:after {
  content: "";
  position: absolute;
  height: 3px;
  width: 0.8em;
  background: white;
}

#menu-icon {
  top: 0.3em;
}

#menu-icon:before {
  top: -0.2em;
}

#menu-icon:after {
  top: 0.22em;
}

#menu-icon-container.button-active {
  color: lime;
}

#menu-icon.button-active {
  background: transparent;
  transform: rotate(-135deg);
}

#menu-icon.button-active:before,
#menu-icon.button-active:after {
  top: 0;
}

#menu-icon.button-active:before {
  transform: rotate(90deg);
}

@media only screen and (max-width: 600px) {
  body {
    padding-inline-start: unset;
    padding-inline-end: unset;
  }

  #navigation {
    display: none;
  }

  #content {
      margin-inline-start: unset;
  }

  #menu-icon-container {
    display: inline-block;
  }
}