* {
  box-sizing: border-box;
}

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

.form-container {
  max-width: 500px;
  margin: 20px auto;
  padding: 0 15px;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.input-box {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 1px solid #000;
  border-radius: 12px;
  font-size: 16px;
  text-align: center;
}

h3 {
  margin-top: 20px;
  margin-bottom: 10px;
  font-size: 18px;
  text-align: center;
}

.momo-section {
  width: 100%;
  border: 1px solid #000;
  border-radius: 12px;
  padding: 10px;
  margin-bottom: 20px;
}

.momo-table {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
  align-items: center;
}

.momo-table.header {
  font-weight: bold;
  text-align: center;
}

.momo-table div,
.small-input {
  text-align: center;
}

.small-input {
  width: 100%;
  padding: 8px;
  border: 1px solid #000;
  border-radius: 6px;
  font-size: 14px;
}

.submit-btn {
  background-color: #97ec7a;
  border: none;
  border-radius: 16px;
  padding: 12px 24px;
  font-size: 16px;
  cursor: pointer;
  width: 100%;
  max-width: 200px; 
}