<div class="login-wrap">
    <div class="login">
      <div class="avatar">
      </div>
      <span class="user">Matt Boldt</span>
      <form id="login" class="login-form">
        <input type="password" placeholder="Password" class="pass"/><span class="arrow">&rarr;</span>
      </form>

    </div>
  </div>
<div class="wrap">by <a href="https://www.mattboldt.com">Matt Boldt</a><br /><span class="info">Check out the history of Apple.com's Nav bar <a href="https://www.mattboldt.com/demos/css-apple-nav/">here</a> or <a href="https://codepen.io/mattboldt/pen/fJgDj">here</a>.</span></div>
  

<div class="hint">Press enter!</div>

body{
  font-family: "Helvetica Neue", sans-serif;
  background:url(https://i.imgur.com/W8IdvVk.jpg);
  background-size:2000px 1000px;
  background-position:top center;
}
a{
  color:#fff;
  text-decoration: none;
  text-shadow:#000 0px 1px 3px;
}
.wrap{
  width:600px;
  margin:auto;
  text-align: center;
  opacity:0.8;
}
.wrap:hover{
  opacity:1;
}

.login-wrap{
  width:290px;
  height:320px;
  margin:15% auto 0;
  position: relative;
}

.login{
  display: block;
  margin:auto;
  padding:40px 40px 30px;
  position: absolute;
  background-color:#f8f8f8;
  background-image:-webkit-linear-gradient(top, #f0f0f0, #ddd);
  background-image:-moz-linear-gradient(top, #f0f0f0, #ddd);
  background-image:linear-gradient(top, #f0f0f0, #ddd);
  border-radius:5px;
  border:#fff 1px solid;
  box-shadow: rgba(0,0,0,0.5) 0px 3px 20px;
  text-align: center;
}

.avatar{
  display:block;
  margin:0 auto 15px;
  width:100px;
  height:100px;
  border-radius:100%;
  border:#fff 3px solid;
  box-shadow:rgba(0,0,0,0.4) 0px 2px 4px, inset rgba(0,0,0,0.4) 0px 3px 2px;
  overflow:hidden;
  background-image:-webkit-linear-gradient(top left, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 50%), url("https://www.mattboldt.com/assets/img/avatar.jpg");
  background-image:-moz-linear-gradient(top left, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 50%), url("https://www.mattboldt.com/assets/img/avatar.jpg");
  background-image:linear-gradient(top left, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 50%), url("https://www.mattboldt.com/assets/img/avatar.jpg");
  background-size: auto, 100%;
}
.user{
  padding:10px 0;
  font-size: 0.95em;
  text-shadow:rgba(255,255,255,0.7) 0px 1px 0px;
}

.pass{
  display: block;
  width:170px;
  margin:20px auto;
  padding:10px 25px 10px 10px;
  border-radius:3px;
  border:#CCC 1px solid;
}
.login-form{
  position: relative;
}
.arrow{
  position: absolute;
  right:10px;
  top:8px;
  display: block;
  z-index:999;
  color:#999;
  opacity:0;
  -webkit-transition:all 0.5s ease-in-out;
  -moz-transition:all 0.5s ease-in-out;
  transition:all 0.5s ease-in-out;
}

.init-shake{
  -webkit-animation:shake 0.7s ease-in-out;
  -moz-animation:shake 0.7s ease-in-out;
  animation:shake 0.7s ease-in-out;
}
.hint{
  position: absolute;
  bottom:0;
  left:0;
  padding:20px;
  color:#fff;
  text-shadow:#000 0px 1px 5px;
}
.info{
  display:block;
  color:#CCC;
  margin:10px 0;
  font-size:0.95em;
}
@-webkit-keyframes shake{
  0% { left:0; }
  20% { left:10px; }
  40% { left:-10px; }
  60% { left:10px; }
  80% { left:-10px; }
  100% { left:0px; }

}
@-moz-keyframes shake{
  0% { left:0; }
  20% { left:10px; }
  40% { left:-10px; }
  60% { left:10px; }
  80% { left:-10px; }
  100% { left:0px; }

}
@keyframes shake{
  0% { left:0; }
  20% { left:10px; }
  40% { left:-10px; }
  60% { left:10px; }
  80% { left:-10px; }
  100% { left:0px; }

}

  $(function(){
    $("#login").submit(function(e){
      e.preventDefault();
      $(".login").addClass("init-shake");
      setTimeout(function(){
        $(".login").removeClass("init-shake");
      }, 1000);
    });
    
    $(".pass").on("keypress", function(){
      $(".arrow").css("opacity", "1");
    });
  })