.container {
  width: 100%;
  height: 100%;
  background: url('../images/back.png') no-repeat center center;
  background-size: 100% 100%;
  overflow: hidden;
}
.container .logo-time {
  width: 80%;
  margin: 170px auto 0;
}
.container .nav-cont {
  margin-top: 50px;
}
.container .nav-cont div {
  width: 50%;
}
.container .nav-cont div img {
  width: 75%;
  margin: 0 auto;
}
.logo-bot{
  width: 65%;
  margin: 50px auto 0;
}