body {
  text-align: justify;
  background-color: black;
  color: white;
  font-family: Arial, Helvetica, sans-serifs;
  margin: 0;
  padding: 0;
}
body h1{
  text-align: center;
}
nav{
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    background: rgb(2,0,36);
background: linear-gradient(90deg, rgba(2,0,36,1) 28%, rgba(2,39,76,1) 67%, rgba(16,85,150,1) 100%);
}
nav>div:hover {
   background-color: blue;
}
.menu_item {
  justify-content: center;
  padding: 20px;

  text-align: center;
}
footer {
  padding-left: 10px;
  padding-right: 10px;
  justify-content: center;
   height: 50px;
   margin: 0px;
   display: flex;
   flex-direction: row;
   flex-flow: column wrap;
   align-content: space-between;
   background: rgb(16,85,150);
background: linear-gradient(90deg, rgba(16,85,150,1) 10%, rgba(2,39,76,1) 32%, rgba(2,0,36,1) 62%);
   color: white;
}

.instagram {
  max-width: 1200px;
  margin: 0 auto;
}

a {
  color: white;
  text-decoration: none;
}
  @media screen and (max-width: 800px){

    .menu{
        display: flex;
        flex-direction: column;
        flex-wrap: wrap;
    }
}
.imgmenu{
  width: 100%;
}
main{
  align-content: space-around;
  margin-left:  20%;
  margin-right: 20%;
}
.imgAlpinisme{
  width: 100%;
}
.alpinismeContenu{
  flex-wrap: wrap;
}
.txt{
  margin-left: 30%;
  margin-right: 30%;
}
.imgDH{
  width: 100%;
}
.imgtrail{
width: 100%;
}