main {
  padding: 100px 20px 60px;
  max-width: 700px;
  margin: 0 auto;
  box-sizing: border-box;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
}

label {
  display: block;
  margin: 15px 0 5px;
}

input, select, textarea {
  width: 100%;
  padding: 10px;
  font-size: 1rem;
  box-sizing: border-box;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
  background: #000;
  color: #fff;
  border: none;
  cursor: pointer;
  margin-top: 20px;
}

.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.popup {
  background: #fff;
  padding: 20px;
  max-width: 400px;
  border-radius: 8px;
  text-align: center;
  box-sizing: border-box;
}

.popup p {
  margin: 0 0 15px;
}

.popup-buttons {
  display: flex;
  justify-content: space-between;
}

.popup-buttons button {
  flex: 1;
  margin: 0 5px;
  padding: 10px;
  background: #000;
  color: #fff;
  border: none;
  cursor: pointer;
}