body {
  background-image: url('../images/6anneaux-splash.webp');
  background-size: cover;
  background-position: bottom right;
  position: relative;
  font-family: sans-serif;
}
.position-center {
  position: relative;
  height: 100vh;
}
.centerbox {
  background-color: #000;
  border: 1px solid #999;
  border-radius: 1em;
  box-shadow: 0 0 2em #000;
  padding: .5em 2em;
  color: #fff;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}
.center {
  text-align: center;
}
h1 {
  margin-top: 0;
}
a {
  color: #69e;
  text-decoration: none;
  font-weight: bold;
}
p {
  position: relative;
  clear: both;
}
.tete {
  border-top: 1px solid #666;
}
.pied {
  display: flex;
}
.half {
  display: inline;
  width: 50%;
}
.half div {
  clear: both;
  height: 32px;
  text-align: left;
}
.iconlink {
  position: relative;
  top: -7px;
  margin-right: 10px;
}
form {
  margin: 2em 0 4em 0;
}
@media screen and (max-width: 750px) {
  body {
    padding: 0;
  }
  .centerbox {
    left: 0;
    right: 0;
    top: 0;
    -ms-transform: translate(0, 0);
    transform: translate(0%, 0%);
    border: 0;
    border-radius: 0;
  }
  .pied {
    display: block;
  }
  ul {
    margin: 0;
    padding: 0;
    padding-top: .2em;
    border-top: 1px solid #444;
  }
  ul li {
    list-style: none;
    border-bottom: 1px solid #444;
    margin-bottom: .2em;
    padding-bottom: .2em;
  }
}