<section class="wrapper">
  
  <!-- BEGIN: menu -->
  <nav class="menu">
    <ul class="menu__list">
      <li class="menu__item  js-modify  active" data-target=".card" data-effect="zoom">Zoom out</li>
      <li class="menu__item  js-modify" data-target=".card" data-effect="blur">Blur</li>
      <li class="menu__item  js-modify" data-target=".card" data-effect="color">Colors</li>
    </ul>
  </nav>
  <!-- END: menu -->
  
  <!-- BEGIN: card -->
  <div class="card" data-effect="zoom">
    <button class="card__save  js-save" type="button">
      <i class="fa  fa-bookmark"></i>
     </button>
    <figure  class="card__image">
      <img src="https://c1.staticflickr.com/4/3935/32253842574_d3d449ab86_c.jpg" alt="Short description">
    </figure>
    <div class="card__header">
      <figure class="card__profile">
        <img src="https://upload.wikimedia.org/wikipedia/commons/1/1c/Neil_Armstrong.jpg" alt="Short description">
      </figure>
    </div>
    <div class="card__body">
      <h3 class="card__name">Neil Armstrong</h3>
      <p class="card__job">astronaut & engineer</p>
      <p class="card__bio"> American astronaut, engineer, and the first person to walk on the Moon.</p>
    </div>
    <div class="card__footer">
      <p class="card__date">Feb 10 2018</p>
      <p class=""></p>
    </div>
  </div>
  <!-- END: card -->
  
</section>
/* GLOBAL VARIABLES */
:root {
  --font: "Roboto", sans-serif;
  --fontOrigin: 1rem;     /* 16px */
  --fontSmall: 0.625em;   /* 10px */
  --fontMedium: 0.875em;  /* 14px */
  --fontNormal: 1em;      /* 16px */
  --fontLarge:  1.375em;  /* 22px */
  --fontLight: 100;
  --fontRegular: 400;
  --speed: 0.65s;
}

@keyframes zoom {
  from {
    object-position: 0 50%;
  }
  to {
    object-position: 100% 50%;
  }
}

@keyframes blur {
  from {
    -webkit-transform: scale(1, 1);
    transform: scale(1, 1);
  }
  to {
    -webkit-transform: scale(1.5, 1.5);
    transform: scale(2, 2);
  }
}

* {
  border: 0;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font);
  font-weight: var(--fontOrigin);
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: 0.005rem;
  -webkit-font-smoothing: subpixel-antialiased;
  font-smoothing: subpixel-antialiased;
}

.wrapper {
  display: grid;
  grid-template-columns: repeat( auto-fit, 1fr );
  grid-template-rows: auto;
  grid-template-areas:
    "menu menu menu"
    ". card .";
  width: 100vw;
  min-height: 100vh;
  padding-top: 40px;
  padding-bottom: 40px;
}

.menu {
  grid-area: menu;
  align-self: end;
}

.menu__list {
  text-align: center;
}

.menu__item {
  position: relative;
  display: inline-block;
  padding: 10px 20px;
  font-size: var(--fontMedium);
  font-weight: var(--fontRegular);
  text-transform: uppercase;
  color: #a9a9a9;
  cursor: pointer;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.menu__item::after {
  content: "";
  display: block;
  width: 0;
  height: 2px;
  margin-top: 6px;
  background: rgba(100, 100, 250, 1);
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.menu__item:hover {
  color: rgba(150, 150, 255, 1);
}
.menu__item.active {
  color: rgba(100, 100, 250, 1);
}

.menu__item.active::after {
  width: 100%;
}

.card {
  position: relative;
  grid-area: card;
  align-self: center;
  justify-self: center;
  overflow: hidden;
  display: block;
  width: 100%;
  max-width: 250px;
  height: 400px;
  font-size: var(--fontOrigin);
  border-radius: 8px;
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card:hover {
  box-shadow: 0 40px 130px rgba(0, 0, 0, 0.6);
  -webkit-transform: scale(1.1, 1.1);
  transform: scale(1.1, 1.1);
}

.card__save {
  position: absolute;
  top: 10px;
  right: 10px;
  display: block;
  width: 35px;
  height: 35px;
  background: transparent;
  border: 0;
  opacity: 0;
  border-radius: 3px;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card__save:focus {
  outline: 0;
  background-color: rgba(255, 255, 255, 0);
}

.card:hover .card__save {
  opacity: 0.6;
}

.card__save i {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card__save:hover i {
  color: rgba(255, 255, 255, 0.8);
}

.card__save:active,
.card__save.active {
  opacity: 1 !important;
}

.card__save:active i,
.card__save.active i {
  color: white;
}

.card__image {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  overflow: hidden;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0.5));
}

.card__image img {
  -webkit-transform: scale(1.3, 1.3);
  transform: scale(1.3, 1.3);
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
  animation-name: zoom;
  animation-duration: 30s;
  animation-direction: alternate;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.card:hover .card__image img {
  -webkit-transform: scale(1, 1);
  transform: scale(1, 1);
  opacity: 0.5;
}

.card__header {
  display: grid;
  width: 100%;
  height: 200px;
}

.card__profile {
  align-self: center;
  justify-self: center;
  display: block;
  overflow: hidden;
  width: 10vmax;
  height: 10vmax;
  max-width: 100px;
  max-height: 100px;
  border-radius: 50%;
}

.card__profile img {
  -webkit-transform: scale(1.5, 1.5)  translateZ(0);
  transform: scale(1.5, 1.5)  translateZ(0);
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  -webkit-filter: grayscale(50%) contrast(75%) brightness(1.3);
  filter: grayscale(50%) contrast(75%) brightness(1.3);
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
  mix-blend-mode: normal;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.card:hover .card__profile img {
  -webkit-transform: scale(1, 1)  translateZ(0);
  transform: scale(1, 1)  translateZ(0);
}

.card__body {
  display: grid;
  padding: 0 20px;
}

.card__name {
  align-self: center;
  justify-self: center;
  margin-bottom: 2px;
  color: white;
  font-size: var(--fontLarge);
  font-weight: var(--fontLight);
  letter-spacing: 0.1rem;
  text-align: center;
  text-transform: uppercase;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  background: -webkit-linear-gradient(white, #a1a1a1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card:hover .card__name {
  background: -webkit-linear-gradient(white, #c1c1c1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card__job {
  align-self: center;
  justify-self: center;
  display: inline-block;
  font-size: var(--fontSmall);
  font-weight: var(--fontLight);
  text-align: center;
  letter-spacing: 0.35rem;
  color: rgba(100, 130, 200, 0.45);
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card:hover .card__job {
  color: rgba(100, 130, 200, 1);
}

.card__bio {
  position: relative;
  -webkit-transform: translateY(30%);
  transform: translateY(30%);
  display: block;
  margin: 22px 0 16px 0;
  font-size: var(--fontMedium);
  font-weight: var(--fontLight);
  /*text-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.35);*/
  color: rgba(255, 255, 255, 0.65);
  opacity: 0;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card:hover .card__bio {
  -webkit-transform: translateY(0);
  transform: translateY(0);
  opacity: 1;
}

.card__footer {
  position: relative;
  -webkit-transform: translateY(60%);
  transform: translateY(60%);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-areas: "date category";
  padding: 10px 20px;
  opacity: 0;
  -webkit-transition: all var(--speed) ease;
  transition: all var(--speed) ease;
}

.card:hover .card__footer {
  -webkit-transform: translateY(0);
  transform: translateY(0);
  opacity: 1;
}

.card__date {
  grid-area: date;
  display: inline-block;
  align-self: left;
  justify-self: left;
  font-size: var(--fontSmall);
  font-weight: var(--fontLight);
  text-transform: uppercase;
  text-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.45);
  color: rgba(250, 250, 250, 0.4);
}

/* MODIFIERS */
.card[data-effect="blur"]:hover .card__image img {
  -webkit-filter: blur(3px);
  filter: blur(3px);
}

.card[data-effect="blur"] .card__image img {
  animation-name: blur;
}

.card[data-effect="color"]:hover {
  -webkit-transform: scale(1, 1);
  transform: scale(1, 1);
  box-shadow: 0 40px 260px rgba(255, 0, 0, 0.1), 0 40px 130px rgba(250, 100, 100, 0.2), -80px -40px 230px rgba(0, 200, 250, 0.15), 80px 40px 230px rgba(120, 120, 255, 0.15);
}

.card[data-effect="color"] .card__image {
  background: linear-gradient(to bottom, rgba(20, 20, 100, 1), rgba(255, 100, 100, 0.5))
}

.card[data-effect="color"]:hover .card__image img {
  opacity: 0.8;
}

.card[data-effect="color"]:hover .card__profile img {
  -webkit-filter: grayscale(50%) contrast(80%) brightness(1.6);
  filter: grayscale(50%) contrast(80%) brightness(1.6);
  mix-blend-mode: normal;
}
var demoButtons;

function start () {
  
  // Add event "click" to "demo buttons"
  demoButtons = document.querySelectorAll ('.js-modify');
  for (var i = 0; i < demoButtons.length; i++) {
    demoButtons[i].addEventListener ('click', toggleEffect);
  }
  
  // Add event "click" to "save buttons"
  var saveButtons = document.querySelectorAll ('.js-save');
  for (var i = 0; i < saveButtons.length; i++) {
    saveButtons[i].addEventListener ('click', toggleActive);
  }
  
}

// Toggle "effect" classes
function toggleEffect () {
  var target = document.querySelector (this.dataset.target);
      target.dataset.effect = this.dataset.effect;
  
  for (var i= 0; i < demoButtons.length; i++) {
    demoButtons[i].classList.remove ('active');
  }
  
  toggleActive.call (this);
}

// Toggle "active" class
function toggleActive () {
  this.classList.toggle ('active');
}

// Invoke "start ()" function
window.addEventListener ('load', start);

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External JavaScript

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