body {
    background-color: green;
}

main {
    display: flex;
    justify-content: center;
    align-items: center;
}

#section_1 {
    background-color: whitesmoke;
    margin: 25px;
    padding: 15px;
    width: 400px;
}

div {
    margin-top: 10px;
}

[name=input] {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    box-sizing: border-box;
}

#submit {
  width: 100%;
  background-color: #4CAF50;
  color: black;
  padding: 14px 20px;
  margin: 8px 0;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}