* {
  box-sizing: border-box;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: auto;
}

html {
  font-family: sans-serif;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: greenyellow; /* a changer j'aime pas trop cette couleur en vrai*/
  background-image: url(./licence_free_background.jpg);
}

ul {
  list-style-type: none;
}

li{
  font-size: 20px;
}

h1 {
  text-align:center;
  font-size: 54px;
}

h2 {
  text-align:center;
  font-size: 60px;
  opacity: 1.0;
}

h3 {
  text-align:center;
  font-size: 30px;
  opacity: 1.0;
}
#principale {
  width: 951px;
  margin: auto;
  display: flex;
}

.secondaires {
  width: 425px;
  margin-left: 25px;
  margin-right: 25px;
  border: 0px solid black;
  border-radius: 40px;
  padding: 15px;
  background-color: greenyellow;
  opacity: 0.7;
}

.secondaires:hover {
  opacity: 1.0;
}

.checkboxes {
width: 200px;
margin: auto;
opacity: 1.0;
}

#calcul {
  width: 301px;
  margin: auto;
}

.start {
  margin-top: 25px;
}

#boite_qcm {
  width: 525px;
  margin: auto;
}

#liste_qcm_reponces {
  display: flex;
  flex-wrap: wrap;
}

.qcm_reponses {
  width: 200px;
  margin: 10px;
  font-size: 30px;
  text-align: center;
}

#titre {
  border: 3px solid black;
  border-radius: 12px;
  width: 508px;
  margin-left: auto;
  margin-right: auto;
}

#accueil {
  border: 3px solid black;
  border-radius: 12px;
  width: fit-content;
  margin: auto;
  padding: 25px;
  margin-top: 25px;
  margin-bottom: 25px;
}

p {
  text-align:center;
}

table {
  border-collapse: collapse;
  border: 2px black solid;
  font: 12px sans-serif;
}

td {
  border: 1px black solid;
  padding: 10px;
  font-size: 28px;
  text-align: center;
  width: calc(100% + 5px);
}

#classement {
  margin:0 auto;
  display: table;
}

#entete {
  width: auto;
  background-color: #00701a;
  display: flex;
}

a {
  text-decoration: none;
  font-size: 16px;
  color: black;
}

.bouton {
  width: 120px;
  text-align: center;
  margin-left: 10px;
  margin-right: 10px;
  height: 55px;
  padding: 18px;
  background-color: #43a047;
}

.bouton:hover{
  background-color: #76d275;
}