body {
  font-family: 'Helvetica', 'Arial', sans-serif;
  line-height: 1.6;
  color: #000;
  background-color: #fff;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

.header h1 {
  font-size: 28px;
  margin: 0;
}

.header h2 {
  font-size: 18px;
  font-weight: normal;
  color: #666;
  margin: 10px 0 0;
}

.post {
  border-bottom: 1px solid #e5e5e5;
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.post:last-child {
  border-bottom: none;
}


.subscribe-form {
  background-color: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin: 20px 0;
  border: 1px solid #e5e5e5;
}

.subscribe-form h3 {
  margin: 0 0 15px 0;
  font-size: 18px;
  color: #000;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #333;
}

.form-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  box-sizing: border-box;
}

.subscribe-btn {
  background-color: #000;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  width: 100%;
}

.subscribe-btn:hover {
  background-color: #333;
}

.thank-you-message {
  color: #28a745;
  font-weight: bold;
  margin-top: 10px;
}