body {
  font-family: 'Tahoma', 'Arial', sans-serif;
  text-align: right;
  padding: 20px;
}
label {
  display: inline-block;
  width: 150px;
  margin-bottom: 10px;
}
input[type="text"],
input[type="number"] {
  margin-bottom: 10px;
  width: 200px;
}
input[type="submit"] {
  padding: 10px 20px;
  cursor: pointer;
}
table {
  border-collapse: collapse;
  width: 100%;
  max-width: 800px;
  margin-top: 20px;
}
th,
td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: right;
}
th {
  background-color: #f2f2f2;
}
.error {
  color: red;
  margin-top: 10px;
}
.success {
  color: green;
  margin-top: 10px;
}