* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #000000;
  color: #ffffff;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  width: 600px;
  height: 200px auto;
  background-color: #101010;
  color: #ffffff;
  border: solid 2px #ffffff;
  padding: 30px;
  border-radius: 10px;
}

.header {
  align-self: self-start;
  text-align: left;
}

input {
  width: 20%;
  padding: 10px;
  color: #ffffff;
  background-color: #101010;
  border: solid 2px #ffffff;
  border-radius: 5px;
  margin: 10px 0;
  font-size: 15px;
}

select {
  width: 28%;
  padding: 10px;
  color: #ffffff;
  background-color: #101010;
  border: solid 2px #ffffff;
  border-radius: 5px;
  margin: 10px 0;
  font-size: 15px;
}

button {
  width: 20%;
  padding: 10px;
  color: #ffffff;
  background-color: #101010;
  border: solid 2px #ffffff;
  border-radius: 5px;
  margin: 10px 0;
  font-size: 15px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:disabled {
  background-color: #777;
  cursor: not-allowed;
}

button:hover {
  background-color: #ffffff;
  color: #101010;
}