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

html, body {
  height: 100%;
  width: 100%;
  font-family: 'Georgia', serif;
  color: white;
}

body {
  background: url('https://esthecure.com/esthecure.png') no-repeat center center fixed;
  background-size: cover;
}

.overlay {
  height: 100%;
  width: 100%;
  /*background-color: rgba(0, 0, 0, 0.4);  léger assombrissement */
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
}

.content {
  max-width: 700px;
}