sf-form {
  max-width: 420px;
  font-family: system-ui, sans-serif;
}

label {
  display: block;
  margin-top: 14px;
  font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

input[type="submit"] {
  margin-top: 20px;
  padding: 12px;
  width: 100%;
  background: #0056b3;
  color: #fff;
  border: none;
  font-size: 16px;
  cursor: pointer;
}