Данила

<div class="knopka">
  <div class="kn">
    <button onclick="showElement()">Показать больше</button>
  </div>
  
  <div class="kn1">
    <button onclick="hideElement()">Скрыть</button>
  </div>
  
  <div class="container" id="imageContainer">
    <div class="scr41">
      <img src="/Untitled (5)/Group 10.png" alt="Image 1">
    </div>
  
    <div class="scr51">
      <img src="/Untitled (5)/Group 11.png" alt="Image 2">
    </div>

    <div class="scr51">
      <img src="/Untitled (5)/Group 12.png" alt="Image 3">
    </div>
  </div>
</div>

.knopka {
    text-align: end;
}

.kn {
    margin-top: -55px;
    margin-right: 350px;
}

.kn button, .kn1 button {
    color: #4E4E4E;
    border-radius: 5px;
    background-color: #F7F7F7;
    font-size: 15px;
    border: none;
    width: 200px;
    height: 40px;
}

.kn button:hover, .kn1 button:hover {
    background-color: #ffa34857;
    color: rgb(0, 0, 0);
    transition: all 0.6s ease;
}

.container {
    justify-content: center;
    display: flex;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    pointer-events: none;
}

.container.show {
    opacity: 1;
    pointer-events: auto;
}

.scr41 img, .scr51 img {
    margin-top: 70px;
    width: 140px;
}

function showElement() {
    const element = document.getElementById('imageContainer');
    element.classList.add('show');
}

function hideElement() {
    const element = document.getElementById('imageContainer');
    element.classList.remove('show');
}

.case-wrapper {
    position: relative;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    outline: none;
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    box-shadow: none;
}

.case-wrapper:focus {
    outline: none;
    box-shadow: none;
}

.case-wrapper::-moz-focus-inner {
    border: 0;
}