#section {
  float: left;
  text-align: center;
  box-shadow: 10px;

}

#container {
  text-align: center;

}

h1 {
  text-decoration: underline;
}

.python-embed {
  border: 3px;
  border-style: solid;
  border-radius: 8px;
}

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
}

#container {
  border: 3px;
  border-style: solid;
  border-radius: 8px;
}

nav {
  ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333333;
  }

  ul li {
    float: left;
  }

  ul li a {
    display: flex;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    justify-content: center;
  }

  ul li a:hover {
    background-color: #111111;
  }
}

.content-section {
  border: 2px;
  border-style: solid;
  border-radius: 8px;
}