[JavaScript30/Day-5] Flex Panel Gallery

Solution

  <script>
    const panels = document.querySelectorAll('.panel');

    function open(){
      this.classList.toggle('wider');
    }

    function openText(e){
      console.log(e.propertyName);
      if (e.propertyName.includes('flex')) {
        this.classList.toggle('open-active');
      }
    }

    panels.forEach(panel => panel.addEventListener('click', open));
    panels.forEach(panel => panel.addEventListener('transitionend', openText));
  </script>

 <style>
    html {
      box-sizing: border-box;
      background: #ffc600;
      font-family: 'helvetica neue';
      font-size: 20px;
      font-weight: 200;
    }
    
    body {
      margin: 0;
    }
    
    *, *:before, *:after {
      box-sizing: inherit;
    }

    .panels {
      min-height: 100vh;
      overflow: hidden;
      display: flex;
    }

    .panel {
      background: #6B0F9C;
      box-shadow: inset 0 0 0 5px rgba(255,255,255,0.1);
      color: white;
      text-align: center;
      align-items: center;
      font-size: 20px;
      background-size: cover;
      background-position: center;
      flex: 1;
      justify-content: center;
      display: flex;
      flex-direction: column;
      transition:
        flex 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11),
        background 0.2s;
    }

    .panel1 { background-image:url(https://source.unsplash.com/gYl-UtwNg_I/1500x1500); }
    .panel2 { background-image:url(https://source.unsplash.com/rFKUFzjPYiQ/1500x1500); }
    .panel3 { background-image:url(https://images.unsplash.com/photo-1465188162913-8fb5709d6d57?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&cs=tinysrgb&w=1500&h=1500&fit=crop&s=967e8a713a4e395260793fc8c802901d); }
    .panel4 { background-image:url(https://source.unsplash.com/ITjiVXcwVng/1500x1500); }
    .panel5 { background-image:url(https://source.unsplash.com/3MNzGlQM7qs/1500x1500); }

    /* Flex Items */
    .panel > * {
      margin: 0;
      width: 100%;
      transition: transform 0.5s;
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .panel > p:first-child { transform: translateY(-100%); }
    .panel.open-active > p:first-child { transform: translateY(0); }
    .panel > p:last-child { transform: translateY(100%); }
    .panel.open-active > p:last-child { transform: translateY(0); }

    .panel p {
      text-transform: uppercase;
      font-family: 'Amatic SC', cursive;
      text-shadow: 0 0 4px rgba(0, 0, 0, 0.72), 0 0 14px rgba(0, 0, 0, 0.45);
      font-size: 2em;
    }
    
    .panel p:nth-child(2) {
      font-size: 4em;
    }

    .panel.wider{
      flex: 5;
    }
  </style>

 

CSS flex grid와 transform translate transition에 대해 공부해야겠다