body {
  font-family: system-ui, sans-serif;
  background: #f6f7f9;
}

.app {
  max-width: 720px;
  margin: 40px auto;
  background: #fff;
  padding: 24px;
  border-radius: 8px;
}

.box {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

input {
  flex: 1;
  padding: 6px;
}

button {
  padding: 6px 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

td, th {
  border-bottom: 1px solid #eee;
  padding: 8px;
}