body {
  font-family: 'Arial', sans-serif;
  background-color: #34495e;
  color: #333;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body {
  height: auto;
}

#wrapper {
  background-color: #34495e;
  color: #fff;
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  z-index: 10;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

#wrapper h1 {
  margin: 0;
  font-size: 2.5em;
  font-weight: normal;
  margin-bottom: 10px;
}

#keywords {
  margin: 0 auto;
  background: #eee;
  border-radius: 5px;
  border: 1px solid #ddd;
  width: 80%;
  max-width: 800px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  -ms-flex-grow: 0;
  flex-grow: 0;
  margin-bottom: 20px;
}

#keywords thead {
  cursor: pointer;
  background: #c9dff0;
}

#keywords thead tr th {
  font-weight: bold;
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

#keywords thead tr th span {
  padding-right: 20px;
  background-repeat: no-repeat;
  background-position: 100% center;
}

#keywords tbody tr {
  color: #555;
}

#keywords tbody tr td {
  text-align: left;
  padding: 10px 20px;
  border-bottom: 1px solid #ddd;
}

#keywords tbody tr:nth-child(odd) {
  background: #f0f0f0;
}

#keywords tbody tr:hover {
  background: #d0e4f2;
}

@media (max-width: 768px) {
  #keywords {
    width: 95%;
  }

  #keywords thead tr th,
  #keywords tbody tr td {
    padding: 8px 12px;
    font-size: 0.9em;
  }

  #wrapper h1 {
    font-size: 2em;
  }
}

#keywords tbody tr:nth-child(-n+3) {
  font-weight: bold;
  color: #2c3e50;
}
