body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #e5e5f7;
    opacity: 0.8;
    background-image: radial-gradient(#444cf7 0.5px, #e5e5f7 0.5px);
    background-size: 10px 10px;
}

h1, h2 {
    text-align: center;
}

#visualization-container {
    display: flex;
    justify-content: space-between;
}

#table-container,
#chart-container {
    width: 45%;
    margin: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #ccc;
}

table th,
table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #ccc;
}

table th {
    background-color: #f2f2f2;
}

nav {
  background-color: #333;
  overflow: hidden;
}

nav a {
  float: left;
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

nav a:hover {
  background-color: #ddd;
  color: black;
}