.primaryBackGroundColor {
  background: #f5f6f6;
  /* Old browsers */
  background: -moz-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* FF3.6-15 */
  background: -webkit-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(to right, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5f6f6', endColorstr='#f5f6f6', GradientType=1);
  /* IE6-9 */
}
body {
  width: 98%;
  margin: auto;
  text-align: center;
  font-family: 'Oswald', sans-serif;
  background-image: url(/build/images/MaxPixel.freegreatpicture.com-Digital-Board-Interfaces-Circuits-Conductors-730793.09e0e22d.jpg);
}
header {
  background: #f5f6f6;
  /* Old browsers */
  background: -moz-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* FF3.6-15 */
  background: -webkit-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(to right, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5f6f6', endColorstr='#f5f6f6', GradientType=1);
  /* IE6-9 */
  border: 1px solid black;
  border-radius: 0 0 10px 10px;
}
#logoFrame {
  width: 70px;
}
#logo {
  width: inherit;
  height: inherit;
}
nav ul {
  list-style: none;
  padding: 0px;
}
nav ul li {
  font-size: 1.5rem;
  padding: 5px;
  border-radius: 10px;
}
nav ul li a {
  color: black;
  text-decoration: none;
  padding: 10px 5px;
  border-radius: 10px;
}
.sousMenusListe {
  position: absolute;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding-left: 0;
}
.sousMenusListe li {
  padding: 2px 0px;
  border-radius: 0;
  background-color: steelblue;
  border: 1px solid black;
  margin: 0;
}
.sousMenusListe li a {
  color: white;
}
h2 {
  font-size: 1.5rem;
}
p {
  font-size: 1rem;
}
section {
  width: 90%;
  margin: 15px auto;
  padding: 5px ;
  border: 1px solid black;
  box-shadow: 0 0 15px;
  border-radius: 10px;
  background-color: white;
}
footer {
  background: #f5f6f6;
  /* Old browsers */
  background: -moz-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* FF3.6-15 */
  background: -webkit-linear-gradient(left, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(to right, #f5f6f6 0%, #dbdce2 21%, #c4c7d3 50%, #dddfe3 80%, #f5f6f6 100%);
  /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5f6f6', endColorstr='#f5f6f6', GradientType=1);
  /* IE6-9 */
  border: 1px solid black;
  border-radius: 10px 10px 0 0;
}
@media (min-width: 780px) {
  nav ul {
    display: flex;
    justify-content: space-around;
  }
}
@media (min-width: 1024px) {
  header {
    display: flex;
  }
  header nav {
    flex: 6;
  }
  header img {
    flex: 1;
  }
}