body {
	background:#616161;
}

h1 {
	color: darkred;
	text-align:center;
}

form {
  background-color:ivory;
  margin: 0 auto;
  width: 500px;
  padding: 1em;
  border: 2px solid red;
  border-radius: 1em;
}

#e1 {
	top: -50px;
	left: -100px;
}


div {
  margin-top: 1em;
}

label {
  display: inline-block;
  width: 90px;
  text-align: right;
}

input {
  font: 1em sans-serif;
  width: 100px;
  box-sizing: border-box;
  border: 1px solid #999;
}

button {
  margin-left: .5em;
}

#bouton {
  padding-left: 90px;
}