body {
  background-color:darkslategray;
  color: lightgray;
  font-family: Verdana;
}

.article p{
  font-size: 16px;
}

.article h1 {
  font-size: 30px;
}

.article h2 {
  font-size: 20px;
}
.main-box {
  width: 1000px;
  height: auto;
  margin: 0 auto;
  border: 3px solid rgb(21, 49, 49);
}

.header-container {
  display: block;
  width: auto;
  height: 200px;
  text-align: center;
  font-size: 20px;
  padding-left: 10px;
  padding-right: 10px;
  padding-bottom: 10px;
}

.header{
  display: block;
  width: auto;
  height: 110px;
  font-size: 40px;
  padding-top: 50px;
}

.grid-container {
  display: grid;
  grid-template-columns: 200px auto;
  grid-template-rows: auto auto;
  padding: 10px;
  gap: 10px;
  height: auto;
}
.grid-container > div {
  background-color: rgb(21, 49, 49);
  border: 1px solid rgb(21, 49, 49);
  padding: 10px;
  font-size: 20px;
}

.sidebar {
  grid-column-start: 1;
  grid-column-end: 2;
  grid-row-start: 1;
  grid-row-end: 2;
}

.article {
  grid-column-start: 2;
  grid-column-end: 2;
  grid-row-start: 1;
  grid-row-end: 2;
}

.topnav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: rgb(21, 49, 49);
}

.topnav li {
  display: inline-block;
}

.topnav a {
  display: block;
  color: lightgray;
  text-align: center;
  text-decoration: none;
  padding: 14px 16px;
}

a:hover {
  background-color: darkslategray;
}

.footer {
  display: grid;
  width: auto;
  height: 60px;
  text-align: center;
  font-size: 15px;
  padding: 10px;
}

.sidebar {
  text-align: center;
}

.sidebar ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  font-size: 15px;
}

.sidebar a {
  display: block;
  color: lightgray;
  text-align: center;
  text-decoration: none;
  padding: 5px;
}

.sidebar p {
  font-size: 20px;
}

.updates {
  grid-column-start: 1;
  grid-column-end: 3;
  grid-row-start: 2;
  grid-row-end: 2;
}
.updates p {
  text-align: center;
}
.updates ul {
  list-style-type: none;
  margin: 15px;
  padding: 0;
  font-size: 12px;
  text-align: center;
}
a {
  color:slateblue
}