body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #212529FF;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 20px;
  margin-top: 20vh; /* Adjust as needed for vertical centering */
}

.main-block {
  text-align: center;
}
.main-block *{
  padding: 5px;
}
form{
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  width: 275px;
}
.main-block > form:nth-child(3) > input:nth-child(4) {
  border-radius: 0 0 10px 10px;
}

input{
  border-radius:  10px 10px 0 0;
  border: solid 1px black;
}

h3 {
  font-size: 24px;
  color: #333;
}

p {
  font-size: 16px;
  color: #666;
}

form {
  margin-top: 20px;
}

input[type="submit"] {
  background-color: #212529FF;
  color: #fff;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
  border-radius: 10px;
}

input[type="submit"]:hover {
  background-color: rgba(33, 37, 41, 0.49);
}