<header>
  <h2 class="title">element.style.scrollBehavior</h2>
  <p class="description">Встановлює плавність прокручування в межах елемента при навігації або зміщенні.</p>
</header>
<main>
  <div class="result">
    <div class="controls">
      <button id="scrollToTop">Прокрутити вгору</button>
      <button id="scrollToMiddle">Прокрутити до середини</button>
      <button id="scrollToBottom">Прокрутити вниз</button>
    </div>
    <div id="scrollContainer" class="scroll-container">
      <div class="content-block" id="topSection">Верхній розділ</div>
      <div class="content-block" id="middleSection">Середній розділ</div>
      <div class="content-block" id="bottomSection">Нижній розділ</div>
    </div>
  </div>
</main>

body {
  font-size: 16px;
  line-height: 1.5;
  font-family: monospace;
}

header {
  background-color: #f1f1f1;
  margin-bottom: 25px;
  padding: 15px;
  -webkit-box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
  -moz-box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
  box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
}

header h2.title {
  padding-bottom: 15px;
  border-bottom: 1px solid #999;
}

header p.description {
  font-style: italic;
  color: #222;
}

.result {
  background-color: #f8f8f8;
  padding: 15px;
  -webkit-box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
  -moz-box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
  box-shadow: 0px 0px 3px 0px rgba(118, 118, 118, 1);
}

.controls {
  margin-bottom: 15px;
}

button {
  margin: 5px;
  padding: 10px 20px;
  background-color: #008CBA;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #005f6b;
}

.scroll-container {
  height: 300px;
  overflow-y: scroll;
  border: 1px solid #ccc;
  position: relative;
}

.content-block {
  height: 300px;
  padding: 20px;
  border-bottom: 1px solid #ccc;
}

const scrollContainer = document.getElementById('scrollContainer');
const scrollToTopButton = document.getElementById('scrollToTop');
const scrollToMiddleButton = document.getElementById('scrollToMiddle');
const scrollToBottomButton = document.getElementById('scrollToBottom');
const topSection = document.getElementById('topSection');
const middleSection = document.getElementById('middleSection');
const bottomSection = document.getElementById('bottomSection');

scrollContainer.style.scrollBehavior = 'smooth';

scrollToTopButton.addEventListener('click', function() {
  topSection.scrollIntoView();
});

scrollToMiddleButton.addEventListener('click', function() {
  middleSection.scrollIntoView();
});

scrollToBottomButton.addEventListener('click', function() {
  bottomSection.scrollIntoView();
});

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