body {
  margin: 10px;
  padding: 10px;
  text-align: center;
  font-family: "Lato", sans-serif;
  background-color: #3B3D4B;
}

header {
  padding: 10px 10px;
  color: #000000;
  margin-bottom: 10px;
  background-color: #7E966F;
  }

h1{
  font-size: 30px;
  text-transform: uppercase;
  color: #FFFFFF;
  font-weight: 400;
}

h2 {
  font-size: 20px;
  color: #FFFFFF;
}

h3 {
  font-size: 16px;
  text-align: left;
}

p{
  text-align: left;
  font-size : 16px;
  margin-left : 20px;
  padding : 10px;
}

.quiz p {
  text-align: center;
}

.left-container{
  display: inline-block;
  float: left;
  width: 50%;
  margin-bottom: 20px;
}

.vignette{
  display: block;
  float: left;
  width: 20%;
}

.couleur{
  border: 1px solid #000000;
  width: 50px;
  height : 50px;
  display:block;
  margin: 15px 0px 15px 20px;
  font-size: 10px;
}
/* cache la partie longeur d'onde dans la vignette, mais laisse le nom*/
.couleur p{
  display: none;
}

.detail{
  display: block;
  float: left;
  width: 70%;
  margin-top: 20px;
}

#placeholder{
		width: 300px;
    height: 300px;
		border:1px solid grey;
    margin: 25px 5px 5px 10px;
    background-color: #FFFFF0;
}

#placeholder p{
    font-size: 20px;
    text-align: center;
}

.quiz{
  display: block;
  float: left;
  width: 45%;
  border-left: 3px dotted #FFFFFF;
  margin: 0px 0px 50px 20px;
  padding-left: 20px;
  padding-bottom: 210px;
  color : #FFFFFF;
}

button{
  background-color: #ffbe4f;
  color: #000000;
  width:200px;
  height:80px;
  padding: 5px 10px;
  font-size: 14px;
}

footer {
  clear: both;
  color : #FFFFFF;
  padding: 10px 5px;
  background-color: #7E966F;
}

footer p{
  font-size: 12px;
  text-align: center;
}