CodePen Embed - Login UI

<html>

<head>

  <script>
    function getLocale($city) {
      geocoder = new google.maps.Geocoder();
      geocoder.geocode({
        'address': $city
      }, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
          let $lat = results[0].geometry.location.lat();
          let $long = results[0].geometry.location.lng();
          initMap($lat, $long);
        }
      });
    }

    function initMap($lat, $long) {
      var map = new google.maps.Map(document.getElementById('map'), {
        center: {
          lat: $lat,
          lng: $long
        },
        zoom: 5,
        disableDefaultUI: true,
        styles: [{
            elementType: 'geometry',
            stylers: [{
              color: '#fffdf3'
            }]
          },
          {
            elementType: 'labels.text.stroke',
            stylers: [{
              color: '#fffdf3'
            }]
          },
          {
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'administrative.locality',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'poi',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#fffdf3'
            }]
          },
          {
            featureType: 'poi.park',
            elementType: 'geometry',
            stylers: [{
              color: '#8a8983'
            }]
          },
          {
            featureType: 'poi.park',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road',
            elementType: 'geometry',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road',
            elementType: 'geometry.stroke',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road.highway',
            elementType: 'geometry',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road.highway',
            elementType: 'geometry.stroke',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'road.highway',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'transit',
            elementType: 'geometry',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'transit.station',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#d59563'
            }]
          },
          {
            featureType: 'water',
            elementType: 'geometry',
            stylers: [{
              color: '#121314'
            }]
          },
          {
            featureType: 'water',
            elementType: 'labels.text.fill',
            stylers: [{
              color: '#fffdf3'
            }]
          },
          {
            featureType: 'water',
            elementType: 'labels.text.stroke',
            stylers: [{
              color: '#fffdf3'
            }]
          }
        ]
      });
    }
  </script>
</head>

<body>
  <div class="container">
    <div class="control">
      <div class="loading"></div>
      <div class="logo">
        <div class="icon"><span>&pi;</span></div>
        <div class="background"></div>
      </div>
      <form action="" class="entry">
        <input type="text" value="random user" class="name entry__text" name="name" placeholder="Username" />
        <input type="password" value="pa$$w0rd" class="name entry__text" name="name" placeholder="Password" />
        <button class="entry__submit" type="submit">Generate</button>
      </form>
      <div class="avatar"></div>
      <p class="acc_name"></p>
    
    </div>
    <div class="meta">
      <div id="map" class="meta__map"></div>
      <div class="meta__contact">
        <p class="meta__email"><strong><span></span></strong></p>
        <p class="meta__phone">
          <span></span>
        </p>
      </div>
    </div>
 <a href="#" class="close">&#10005;</a>
  </div>
 
 
  <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBUdj34Fv53IrP7rt9uTcKs6ud4F3ooBWw&callback=initMap"></script>
</body>

</html>

@import url(https://fonts.googleapis.com/css?family=Quicksand:200,400,500,700);

$black: #121314;
$black50: #c2c3c4;
$white: #fffdf3;

body,
html {
  height: 100%;
}
* {
  box-sizing: border-box;
  &:focus {
    outline: none;
  }
}
p {
  margin-top: 0;
  margin-bottom: 0.75em;
}
p:last-child {
  margin-bottom: 0;
}

@mixin font {
  font-family: "Quicksand", sans-serif;
  font-weight: 200;
}

@mixin button-animation {
}

body {
  background: #1d1e23;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
  @include font;
}

input {
  @include font;
}
.loading {
  height: 4px;
  width: 4px;
  border-radius: 2px;
  background: $white;
  position: absolute;
  top: 1.5em;
  right: 1.5em;
  opacity: 0.2;
  transition: 0.3s ease-in;
}

.loading.on {
  opacity: 1;
  box-shadow: 0px 0px 10px 0px rgba(255,255,255,0.7);
}

.loading.logout {
 animation: logout 1s ease-out forwards;
}

@keyframes logout {
  0%, 80% {
   opacity: 1;
    background: red;
    box-shadow: 0px 0px 10px 0px red;
  } 
  100% {
  background: white;
    box-shadow: 0px 0px 0px 0px red; 
  }
}
.container {
  height: 330px;
  width: 300px;
  border-radius: 2px;
  transform: rotateX(4deg);

  border-top: 1px solid #242424;
  box-shadow: 0px 370px 20px #00000030;
  transition: all 0.5s ease-out;
  .control {
    position: relative;
    z-index: 2;
    padding: 2.5em;
    border-radius: 2px;
    background: #100e0f;
    height: 330px;
    width: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .meta {
    width: 0;
    position: absolute;
    background: $white;
    left: 0;
    top: 0;
    border-radius: 3px;
    height: 330px;
    width: 300px;
    transition: 0.5s ease-out;
    display: flex;
    flex-direction: column;
    &__map {
      width: 100%;
   //   display: none;
      flex-grow: 1;
    }
    &__contact {
      padding: 2em;
    }
  }
  .avatar {
    width: 0px;
    height: 0px;
    background: #000;
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid #242424;
    border-radius: 75px;
    transition: 0.5s;
    margin-bottom: 1em;
  }
  &.logged-in {
    width: 600px;
    display: flex;
    border-top: 1px solid #323;
    padding: 0;
    position: relative;
    box-shadow: 0px 400px 30px #00000030;
    transform: rotateX(4deg) rotateY(15deg) rotateZ(-5deg) translateY(-40px);
    border-radius: 5px;
    .control, .meta {
      border-radius: 5px;
    }
    .loading {
      background: #b4e861;
        box-shadow: 0px 0px 10px 0px #b4e861;
    }
    .entry {
      display: none;
    }
    .acc_name {
      display: inline;
      color: $white;
    }
    .avatar {
      display: block;
      width: 150px;
      height: 150px;
    }
    .close {
      display: block;
    }
    .control {
      width: 300px;
      z-index: 3;
      .logo {
        position: absolute;
        top: 1.25em;
        left: 1.25em;
        transform: scale(0.66);
      }
    }
    .meta {
      //animation: slide 0.5s ease-out forwards;
      left: 300px;
      &__map {
        display: block;
      }
    }
    .entry__submit {
      display: none;
    }
  }
}

.entry {
  transition: height 0.75s ease-out;
  &__text {
    width: 100%;
    background: transparent;
    border: 0;
    color: $white;
    padding: 0 0 0.5em;
    font-size: 1rem;
    margin-bottom: 1.5em;
    border-bottom: 1px dashed $black50;
  }
  &__submit {
    background: transparent;
    border: 0;
    border-top: 1px solid black;
    width: 100%;
    color: #aaa;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.5s;
    font-size: 1rem;
    text-align: center;
    padding: 1em;
    position: absolute;
    bottom: 0;
    border-bottom-right-radius: 3px;
    border-bottom-left-radius: 3px;
    left: 0;

    transition: all 0.15s ease-out;
    overflow: hidden;
    &:before {
      content: " ";
      position: absolute;
      border-top: 48px solid #000;
      border-right: 48px solid $black;
      top: 0;
      z-index: -1;
      left: -60px;
      width: 0%;
      height: 100%;
      background: #000000;
      transition: all 0.15s ease-out;
    }
    &:after {
      content: " \2192";
      width: 0;
      display: block;
      position: absolute;
      right: 1em;
      top: calc(50% - 0.5em);
      overflow: hidden;
      transition: all 0.2s ease-out;
    }
    &:hover {
      color: $white;
      &:before {
        width: calc(100%);
        left: 0;
      }
      &:after {
        width: auto;
        margin-left: 0.5em;
      }
    }
  }
}

.close {
  position: absolute;
  width: 1em;
  text-decoration: none;
  color: $white;
  margin-bottom: 0;
  display: none;
  bottom: -40px;
  opacity: 0.2;
  z-index: 999;
  left: 50%;
  overflow: hidden;
  transition: all 0.2s ease-out;
  &:hover {
    opacity: 1;
    transform: scale(1.1);
  }
}
.acc_name {
  display: none;
  color: $white;
  text-transform: capitalize;
}

.addr {
  display: flex;
}
.logo {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  width: 60px;
  margin-bottom: 3em;
}

.icon {
  color: $white;
  font-size: 2.5em;
  grid-column: 1 / 2;
  grid-row: 1;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.background {
  width: 60px;
  height: 60px;
  transform: rotate(45deg);
  background: transparent;
  border: 1px solid $white;
  grid-column: 1 / 2;
  grid-row: 1;
}

View Compiled

$(".entry__submit").click(function(e) {
  e.preventDefault();
  $('.loading').addClass('on').removeClass('logout');
   login();

});

$(".toggle, .close").click(function(e) {
  e.preventDefault();
  $(".container").toggleClass("logged-in");
  $('.loading').addClass('logout').delay(200).removeClass('on');
});

function login() {
$url = "https://randomuser.me/api/";
  
 fetch($url)
    .then(res => {
      return res.json();
    })
    .then(data => {
      let $data = data.results[0]; 
      let $name = $data.name;
      let $email = $data.email;
      let $photo = $data.picture.large;
      let $street = $data.location.street;
      let $city = $data.location.city;
    console.log($street +  ', ' + $city);
      let $phone = $data.cell;
    
      $('.avatar').css('background-image', 'url(' + $photo + ')');
      $('.acc_name').text($name.first + ' ' + $name.last);

   $('.meta__email span').text($email);
      $('.meta__phone span').text($phone);
   $container = $(".container");
   getLocale($street + ', ' + $city);
  
setTimeout(function() {
 $container.toggleClass("logged-in");
}, 1000); 
    
      
    });
}

This Pen is owned by Kyle Wetton on CodePen.

See more by @kylewetton on CodePen

External CSS

https://fonts.googleapis.com/css?family=Quicksand:400,500,700

External JavaScript

https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js