body {
  background-image: url(../IMG/unsplash.png);
  background-size:cover;
}

nav {
  margin-top: 20px;
  position: fixed;
  text-align: right;
}
nav a {
  background-color: beige;
  padding: 5px 2%;
  border-radius: 3px;
  margin-right: 10px;
  border: 1px solid;
  color: #706262;
  text-decoration: none;
}
nav a:hover {
  box-shadow: 1px 1px #504a4a;
  cursor: pointer;
}
nav a:active {
  background-color: #a28f8f;
}

.RobotImg {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.Conception {
  position: absolute;
  text-align: center;
  color: rgb(118, 116, 113);
  font-size: 150%;
  text-shadow: 2px 2px 3px rgb(184, 154, 159);
}
.breadcrumb > li {
  display: inline;
}
.breadcrumb li.location + li.location::before {
  content: "/";
}
li a {
  color: #000000;
}
@media only screen and (max-width: 600px) {
  .RobotAdds img {
    max-height: 200px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 60%;
  }
  nav {
    width: 400px;
  }
}

@media only screen and (min-width: 600px) {
  .RobotAdds img {
    max-height: 200px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 60%;
  }
  nav {
    width: 400px;
  }
}
@media only screen and (min-width: 750px) {
  .RobotAdds img {
    max-height: 270px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 70%;
  }
  nav {
    width: 750px;
  }
}
@media only screen and (min-width: 958px) {
  .RobotAdds img {
    max-height: 380px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 80%;
  }
  nav {
    width: 950px;
  }
}

@media only screen and (min-width: 1128px) {
  .RobotAdds img {
    max-height: 450px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 90%;
  }
  nav {
    width: 1120px;
  }
}

@media only screen and (min-width: 1365px) {
  .RobotAdds img {
    max-height: 550px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 100%;
  }
  nav {
    width: 1360px;
  }
}

@media only screen and (min-width: 1650px) {
  .RobotAdds img {
    max-height: 650px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 150%;
  }
  nav {
    width: 1650px;
  }
}
@media only screen and (min-width: 2000px) {
  .RobotAdds img {
    max-height: 700px;
    max-width: auto;
    display: block;
    margin-left: 12%;
    opacity: 0.8;
  }
  .Conception {
    top: 30%;
    left: 20%;
    font-size: 150%;
  }
  nav {
    width: 2000px;
  }
}