無法重現(xiàn)平滑滾動效果。誰能幫我？這是我整理的示例代碼片段：const buttonRight = document.getElementById('slideRight');const buttonLeft = document.getElementById('slideLeft');buttonRight.onclick = function() {? document.getElementById('container').scrollLeft += 20;};buttonLeft.onclick = function() {? document.getElementById('container').scrollLeft -= 20;};#container {? width: 145px;? height: 100px;? border: 1px solid #ccc;? overflow-x: scroll;}#content {? width: 250px;? background-color: #ccc;}<div id="container">? <div id="content">Click the buttons to slide horizontally!</div></div><button id="slideLeft" type="button">Slide left</button><button id="slideRight" type="button">Slide right</button>