body {
  margin: 0;
  padding: 0;
  font-family: 'Open Sans', sans-serif;
  background-color: #333333;
  font-size: 22px;
}

.header-title {
  display: block;
  height: 100px;
  text-align: center;
  margin-bottom: 50px;
}

h1 {
  color: #fff;
  text-align: center;
  font-size: 36px;
  margin-bottom: 20px;
}

h2 {
  color: #cccccc;
  font-weight: bold;
  font-size: 24px;
  margin-bottom: 10px;
}

p {
  color: #999999;
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 20px;
}

ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

li {
  display: inline-block;
  margin-right: 10px;
}

a {
  text-decoration: none;
  color: #4ae7ff;
}

a:hover {
  text-decoration: none;
  color: #63aafc;
}

a:active {
  text-decoration: none;
  color: #ffffff;
}

a:visited {
  text-decoration: none;
  color: #0076fd;
}

address {
    color: #999999;
    margin-left: auto;
    text-align: center;
    margin-top: 30px;
    padding-top: 15px;
    border-top: 3px solid black;
}

nav {
  width: 50%;
  max-width: 300px;
  height: 50px;
  margin: auto;
  padding-bottom: 20px;
}

nav > ul {
  display: flex;
  justify-content: space-evenly;
  flex-wrap: wrap;
  align-items: center;
  padding-inline-start: 0;
  margin-block: 0;
  height: 100%;
}

nav > ul > li {
  margin: 0 0.2rem;
  padding: 0.2rem;
  display: block;

}

nav > ul > li:hover {
  background-color: #454545;
  color: #1b1b32;
  cursor: pointer;
  border-radius: 10px;
}

li > a {
  color: inherit;
  text-decoration: none;
}

.container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100vh;
  margin-left: auto;
  margin-right: auto;
  max-width: 1000px;
}

.content-box {
  width: 50%;
  min-width: 400px;
  max-width: 1000px;
  height: 300px;
  background-color: #535353;
  padding: 20px;
  border: 1px solid #2f2f2f;
  margin-left: auto;
  margin-right: auto;
  margin-top: 3px;
  margin-bottom: 3px;
  border-radius: 15px 5px 15px 5px;
  box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.5);
}