@import 
url(https://fonts.googleapis.com/css?family=Open+Sans);

html {
  height: 100%;
  background-image: linear-gradient(to right top, #4449ad 0%, #3498db 100%);
}

nav {
  max-width: 960px;
  mask-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    #ffffff 25%,
    #ffffff 75%,
    rgba(255, 255, 255, 0) 100%
  );
  margin: 0 auto;
  padding: 60px 0;
}

nav ul {
  text-align: center;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 25%,
    rgba(255, 255, 255, 0.2) 75%,
    rgba(255, 255, 255, 0) 100%
  );
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.1),
    inset 0 0 1px rgba(255, 255, 255, 0.6);
}

nav ul li {
  display: inline-block;
}

nav ul li a {
  padding: 18px;
  font-family: "Open Sans";
  text-transform: uppercase;
  color: rgba(0, 35, 122, 0.5);
  font-size: 18px;
  text-decoration: none;
  display: block;
}

nav ul li a:hover {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1),
    inset 0 0 1px rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.1);
  color: rgba(0, 35, 122, 0.7);
}

.container {
  width:80%;
  max-width:1000px;
  margin:0 auto;
  oveflow: hidden;
}

.main  {
  width:100%;
  float:center;
}

.main img {
  width:100%;
  height:auto;
}

.responsive {
  width: 100%;
  height: auto;
}