<div class="container">
  <h2>display:none(前)</h2>
  <div class="box">1</div>
  <div class="box">2</div>
  <div class="box">3</div>
</div>

<div class="container">
  <h2>display:none(后)</h2>
  <div class="box">1</div>
  <div class="box is-toggle">2</div>
  <div class="box">3</div>
  <button class="toggle-display">Toggle Display</button>
</div>

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

body {
  width: 100vw;
  height: 100vh;
  
  display: grid;
  gap: 2vw;
  grid-template-columns: repeat(auto-fill, minmax(40vw, 1fr));
  place-items: center;
}

.container {
  display: grid;
  grid-template-columns: repeat(3, minmax(30vh, 1fr));
  gap: 2vw;
  place-items: center;
  
  &:nth-child(2) .box {
    background: #f36;
    color: #fff;
  }
}

.box {
  background: #fff;
  border-radius: 3px;
  min-height: 30vh;
  width: 100%;
  box-shadow: 0 0 16px rgba(0,0,0,0.07);
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(0,0,0,0.2);
  font-weight: 700;
  transition: all .28s ease;
  
  &.is-hidden {
    display: none;
  }
}

h2 {
  grid-column: 1 / 4;
}

.toggle-display {
    background: #327def;
    padding: 0.5rem 1rem;
    border: none;
    color: #fff;
    font-weight: 700;
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translate(-50%, 0);
    cursor: pointer;
    transition: 0.25s ease;
    
    &:hover,
    &:active,
    &:focus {
        background: darken(#327def, 5%);
        transition: 0.25s ease;
    }
}

document.querySelector('.toggle-display').addEventListener('click', function() {
    document.querySelector('.box.is-toggle').classList.toggle('is-hidden');
});