body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-size: 24px;
  color: #333;
  text-align: center;
  margin-bottom: 20px;
}

label {
  font-size: 16px;
  color: #333;
}

select,
input[type="file"],
input[type="text"],
button {
  font-size: 16px;
  padding: 8px;
  margin-bottom: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

input[type="text"] {
  width: calc(100% - 20px);
}

select {
  width: 100%;
}

button {
  background-color: #007bff;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

ul {
  list-style-type: none;
  padding: 0;
}

ul li {
  font-size: 16px;
  margin-bottom: 5px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th,
td {
  border: 1px solid #ccc;
  padding: 8px;
}

th {
  background-color: #f2f2f2;
}

.total-ids {
  font-size: 14px;
  color: #666;
  margin-top: 10px;
}

.hint {
  position: fixed;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #cce5ff;
  color: #004085;
  padding: 10px 20px;
  border-radius: 5px;
  transition: top 0.5s ease-in-out;
  z-index: 9999;
}

.show {
  top: 10px;
}

.button-container {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}