body {
  font-family: Arial, sans-serif;
  padding: 20px;
}

form input, form button, form select {
  margin: 5px;
  padding: 8px;
}

input, select {
  width: 200px;
  height: 32px;
  padding: 6px;
  font-size: 14px;
  box-sizing: border-box;
}

table {
  width: 100%;
  margin-top: 20px;
  border-collapse: collapse;
}

th, td {
  border: 1px solid black;
  padding: 8px;
  text-align: center;
}

.top-performer {
  background-color: #d4edda;
}