body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f8;
  color: #2c3e50;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  text-align: center;
}

table {
  border-collapse: collapse;
  width: 80%;
  margin: 20px auto;
  background: #f9f9f9;
  box-shadow: 0px 4px 8px rgba(0,0,0,0.2);
}

th {
  background: #2c3e50;
  color: red;
  padding: 12px;
}

td {
  padding: 10px;
}

tr:nth-child(even) {
  background: #ecf0f1;
}

tr:hover {
  background: #dfe6e9;
  transition: 0.3s;
}
#greeting {
  background: gold;
  color: crimson;
  padding: 20px;
  margin: 0;
  font-size: 1.8rem;
  letter-spacing: 1px;
  box-shadow: 0px 3px 6px rgba(0,0,0,0.2);
}

h1, h2 {
  margin-top: 30px;
  color: pink;
}

h1 span {
  cursor: pointer;
  transition: color 0.3s ease;
}

img {
  border-radius: 15px;
  margin-top: 20px;
  box-shadow: 0px 4px 12px rgba(0,0,0,0.2);
}

.thumbnail img {
  margin-top: 10px;
  border: 3px solid #2c3e50;
}

ul {
  list-style-type: square;
  text-align: left;
  max-width: 600px;
  margin: 10px auto;
  padding-left: 20px;
}

ul li {
  padding: 5px 0;
}

a {
  color: #2980b9;
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  color: #e67e22;
  text-decoration: underline;
}

button {
  background: black;
  color: green;
  padding: 10px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s ease;
}

button:hover {
  background: #219150;