h1 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 26px;
  opacity: 0.9;
  color: azure;
  background-color: rgb(3, 0, 0, 0.3);
  text-align: left;
  margin-left: 5%;
  margin-right: 5%;
  padding: 2%;
}

myheading {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 26px;
  opacity: 0.9;
  color: azure;
  background-color: rgb(3, 0, 0, 0.3);
  text-align: center;
  padding: 1%;
}

h2 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 24px;
  color: black;
}

h3 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 20px;
  color: black;
}

h4 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 18px;
  color: black;
}

h5 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 16px;
  color: black;
}

h6 {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 12px;
  color: black;
}

h8 {
  display: block;
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 12px;
  color: black;
  /* text-align: left; */
}
h7 {
  display: block;
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 8px;
  color: black;
  text-align: left;
}

h9 {
  display: block;
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: black;
  text-align: left;
  margin-left: 5px;
}
h10 {
  display: block;
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  font-size: 12px;
  color: black;
  text-align: center;
  margin-left: 5px;
}
nav {
  font-family: "Noto Sans", "Lucida Sans", Helvetica, Arial, sans-serif;
  color: black;
  /* text-align: left; */
}

* {
  box-sizing: border-box;
}
body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  margin: 0;
}
#main {
  display: flex;
  flex: 1;
}
#main > article {
  flex: 1;
}
#main > nav,
#main > aside {
  flex: 0 0 20vw;
  background: beige;
}
#main > nav {
  order: -1;
}
header,
footer {
  background: yellowgreen;
  height: 24vh;
}
header,
footer,
article,
nav,
aside {
  padding: 1em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  grid-gap: 20px;
  align-items: stretch;
}
.grid img {
  border: 1px solid #ccc;
  box-shadow: 2px 2px 6px 0px rgba(0, 0, 0, 0.3);
  max-width: 100%;
}