CodePen Embed - UI Design: Send A Postcard

.container
  h1 Send a postcard
  .info *
    .more-info
      .image
        img(src="https://assets.codepen.io/567707/palette-reputation.png" alt="Taylor Swift album")
      p Part of the 
        a(href="https://codepen.io/collection/XPxJmz") UI Designs inspired by Taylor Swift Album Covers
        |  collection. This is 
        em reputation (2017)
        |.
  
  .inner
    .postcard
      <svg class="close-this" xmlns="http://www.w3.org/2000/svg" id="Capa_1" enable-background="new 0 0 413.348 413.348" height="512" viewBox="0 0 413.348 413.348" width="512"><path d="m413.348 24.354-24.354-24.354-182.32 182.32-182.32-182.32-24.354 24.354 182.32 182.32-182.32 182.32 24.354 24.354 182.32-182.32 182.32 182.32 24.354-24.354-182.32-182.32z"/></svg>
      .postcard__chosen
        img.chosen-card(src="https://assets.codepen.io/567707/cat-molly.png")
        .name Molly
      .postcard__back
        textarea Write your message here... &#13;&#10; &#13;&#10; &#13;&#10;&#13;&#10;p/s this doesn't actually send anything :(
        .address
          input(type="text" placeholder="Receiver's name")
          input(type="email" placeholder="Receiver's email")
          button Send
          
          
          img.stamp(src="https://assets.codepen.io/567707/icon-stamp.svg" alt="paw stamp")
          
    .cover.cover__cat
      a(data-type="cat").js-cat.circle Cat
      img(src="https://assets.codepen.io/567707/pattern-cat.jpg" alt="Cat Pattern")
      .options.cat-options
        .options__item(data-name="Molly")
          img(src="https://assets.codepen.io/567707/cat-molly.png" alt="Cat")
        .options__item(data-name="Kato")
          img(src="https://assets.codepen.io/567707/cat-kato.jpg" alt="Cat")
        .options__item(data-name="Haru")
          img(src="https://assets.codepen.io/567707/cat-underscore.png" alt="Cat")
        .options__item(data-name="Whiskey")
          img(src="https://assets.codepen.io/567707/cat-whiskey.jpg" alt="Cat")
    .cover.cover__dog
      a(data-type="dog").js-dog.circle Dog
      img(src="https://assets.codepen.io/567707/pattern-dog.jpg" alt="Dog Pattern")
      .options.dog-options
        .options__item(data-name="Joey")
          img(src="https://assets.codepen.io/567707/dog-joey.png" alt="Dog")
        .options__item(data-name="Fred")
          img(src="https://assets.codepen.io/567707/dog-pom-2.png" alt="Dog")
        .options__item(data-name="Creamy")
          img(src="https://assets.codepen.io/567707/dog-creamy.jpg" alt="Dog")
        .options__item(data-name="Pepper")
          img(src="https://assets.codepen.io/567707/dog-pepper.jpg" alt="Dog")

View Compiled

:root {
  --white: #ffffff;
  --black-5: #f5f5f5;
  --black-10: #e4e4e4;
  --black-20: #c9c9c9;
  --black-30: #aeaeae;
  --black-50: #939393;
  --black-60: #787878;
  --black-70: #5d5d5d;
  --black-80: #424242;
  --black-90: #272727;
  --black: #0c0c0c;
}
body {
  background: #fff;
  font-family: Berkshire Swash, cursive;
}
* {
  box-sizing: border-box;
}

img {
  filter: grayscale(100%);
}

em {
  font-style: italic;
}

h1 {
  font-family: ZCOOL XiaoWei, serif;
  text-transform: uppercase;
  text-align: center;
  font-size: clamp(2.4rem, 3vw, 4rem);
  letter-spacing: 0.3rem;
  padding: 0.5rem 0.5rem 1.2rem;
}

.container {
  background: var(--black);
  padding: .5rem;
  height: 100vh;
  width: 100%;
  min-width: 550px;
  background: var(--white);
  border: 0.2rem solid var(--black);
  display: flex;
  flex-direction: column;
  @media(max-width: 550px) {
      overflow: auto;
    height: 150vh;
    }
  .inner {
    border: 0.2rem solid var(--black);
    flex: 1;
    display: flex;
    position: relative;
    overflow: hidden;
    
  }
}

.cover {
  flex: 1;
  position: relative;
  user-select: none;
  img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
  }
  &__cat {
    border-right: 2px solid var(-black);
  }
  &__dog {
    border-left: 2px solid var(--black);
  }
}

a.circle {
  font-family: Berkshire Swash, cursive;
  position: absolute;
  width: 9rem;
  height: 9rem;
  top: 50%;
  left: 50%;
  z-index: 4;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--black);
  font-size: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  cursor: pointer;
  &:hover {
    background: var(--black-80);
  }
  &:focus,
  &:active {
    background: var(--black-60);
  }
}

.options {
  width: 100%;
  position: absolute;
  top: -100%;
  
  left: 0;
  height: 100%;
  background: #fff;
  z-index: 8;
  display: grid;
  grid: repeat(2, 50%) / repeat(2, 1fr);
  transition: .4s ease-in-out;
  &.active {
    top: 0;
  }
  @media (max-width: 700px) {
    grid: repeat(4, 25%) / 100%;
  }
  &__item {
    padding: 0.4rem;
    line-height: 0;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    @media (max-width: 700px) {
      margin: 0;
    }
    img {
      width: 75%;
      height: 100%;
      object-fit: cover;
      border: 6px solid var(--white);
      outline: 2px solid var(--black);
      transform: .4s ease;
      &:hover {
        border-color: var(--white);
      }
      @media (max-width: 700px) {
        width: 100%;
        height: 100%;
      }
    }
    @media (min-width: 700px) {
      &:nth-child(1) {
        transform: rotate(5deg) translate(0.8rem, 0.5rem);
      }
      &:nth-child(2) {
        transform: rotate(-2deg) translate(-0.8rem, 0.6rem);
      }
      &:nth-child(3) {
        transform: translate(0.8rem, -0.6rem);
      }
      &:nth-child(4) {
        transform: rotate(-6deg) translate(-0.8rem, -0.6rem);
      }
    }
  }
}

.postcard {
  width: 100%;
  height: 100%;
  background-image: url("https://assets.codepen.io/567707/paper_fibers.png");
  position: absolute;
  z-index: 100;
  left: -100%;
  transition: .5s ease-in-out;
  opacity: 0;
  &.active {
    left: 0;
    opacity: 1;
  }
  .chosen-card {
    border: 1px solid var(--black);
    width: 100%;
    
  }
  
  .name {
    font-family: ZCOOL XiaoWei, serif;
    text-transform: uppercase;
    text-align: center;
    font-size: clamp(1.8rem, 2.5vw, 3rem);
    letter-spacing: 0.3rem;
    padding: 0.8rem 0.8rem 1rem;
    background: var(--white);
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    left: 0;
  }
  &__chosen {
    border: 2px solid var(--black);
    padding: .8rem;
    display: inline-block;
    background: var(--white);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-130%, -50%) rotate(-5deg);
    width: 40%;
    max-width: 19rem;
    min-width: 17rem;
    transition: .3s ease;
    @media(max-width: 800px) {
      transform: translate(-100%, -50%) rotate(-5deg)
    }
    @media(max-width: 550px) {
      transform: translate(-100%, -100%) rotate(-5deg)
    }
    
  }
  &__back {
    border: 2px solid var(--black);
    padding: 2rem;
    position: absolute;
    background: var(--white);
    left: 40%;
    top: 40%;
    transform: translate(-10%, -40%) rotate(2deg);
    display: flex;
    transition: .3s ease;
    @media(max-width: 800px) {
      transform: translate(-30%, -50%) rotate(2deg);
    }
    > * {
      flex: 1;
    }
    textarea {
      resize: none;
      margin-right: 2rem;
      border: none;
      font-size: 120%;
      &:focus {
        outline: none;
        background: var(--black-5);
      }
    }
  }
  .stamp {
    position: absolute;
    width: 15%;
    max-width: 5rem;
    right: 1rem;
    top: 1rem;
  }
  .address {
    border-left: 1px solid var(--black);
    padding: 4.5rem 0 0 2rem;
    
  }
  .close-this {
    position: absolute;
    right: 1rem;
    top: 1rem;
    width: 2rem;
    height: 2rem;
    cursor: pointer;
  }
}

input {
  width: 100%;
  font-family: Berkshire Swash, cursive;
  margin: .5rem 0;
  border: 1px solid;
  border-width: 0 0 1px;
  font-size: 1.2rem;
  padding: .5rem .8rem;
  @media(max-width: 800px) {
    padding: .3rem .5rem;
    font-size: 1rem;
  }
  &:focus {
    outline: none;
    background: var(--black-5);
    
  }
}

button {
  width: 100%;
  background: var(--black-90);
  cursor: pointer;
  font-family: ZCOOL XiaoWei, serif;
  text-transform: uppercase;
  text-align: center;
  font-size: 1.4rem;
  padding: .8rem;
  margin-top: 1rem;
  border: none;
  color: var(--white);
  @media(max-width: 800px) {
    font-size: 1rem;
    padding: .5rem;
    margin-top: .4rem;
  }
  &:hover {
    background: var(--black-90);
  }
  &:focus, &:active {
    background: var(--black-80);
    outline: none;
  }
}


.info {
  position: absolute;
  font-size: 3rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  right: .8rem;
  top: .8rem;
  padding: .2rem;
  text-align: center;
  background: var(--black);
  color: white;
  cursor: pointer;
  &:hover {
    background: var(--black-90);
    .more-info {
      display: flex;
    }
  }
  .more-info {
    display: none;
    align-items: center;
    background: var(--black-60);
    color: var(--red);
    position: absolute;
    right: 0;
    width: 30rem;
    z-index: 100;
    font-size: 1rem;
    text-align: left;
    top: 105%;
    line-height: 1.3;
    a {
      color: var(--red-dark);
    }
    .image {
      flex: 0 0 30%;
      max-width: 10rem;
      line-height: 0;
      img {
        width: 100%;
      }
    }
    p {
      flex: 1;
      padding: 0 1.5rem;
    }
  }
}

View Compiled

$('a.circle').on('click', function(){
  var animal = $(this).data('type');
  if (animal == 'cat') {
    $('.cat-options').addClass('active');
    $('.dog-options').removeClass('active');
  } else if (animal == 'dog') {
    $('.dog-options').addClass('active');
    $('.cat-options').removeClass('active');
  }
});

$('.options__item').on('click', function(){
  var photo = $(this).find('img').attr('src');
  $('.chosen-card').attr('src',photo);
  $('.postcard').addClass('active');
  $('.name').text($(this).data('name'));
});

$(window).on("load resize",function(e){
  var width =  $('.postcard__chosen').outerHeight();
  var height = $('.postcard__chosen').outerWidth();
  $('.postcard__back').outerHeight(height*1.1);
  $('.postcard__back').outerWidth(width*1.1);
});

$('.close-this').on('click', function(){
  $('.postcard').removeClass('active');
});

This Pen is owned by Olivia Ng on CodePen.

See more by @oliviale on CodePen

External CSS

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External JavaScript

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