悬停时显示过渡元素

Question

我有一些图标的侧面菜单。将鼠标悬停在图标上后，其文本将显示在右侧。我希望能够让文本显示/让 div 以平滑的滑动过渡展开。理想情况下，如果可能的话，无需编写任何额外的 javascript。

这可能吗？

:root {
    --darkblack: #000615;
    --black: #0B1721;
    --lightblack: #141B37;
    --yellow: #F7C921;
    --darkyellow: #a28b2a;
    --cyan: #21B7FF;
    --darkcyan: #1c7eaf;
    --magenta: #FF217D;
    --darkmagenta: #531a3b;
}

.nav {
  align-items: flex-end;
}

.nav-pills .nav-link {
  width: fit-content;
}

.nav-pills .nav-link.active {
   color: var(--black) !important;
   background-color: var(--cyan);
 }

.nav-pills .nav-link:not(.nav-link.active) {
  color: var(--cyan) !important;
  cursor: pointer;
}

.nav-pills .nav-link:hover > .nav-title {
  display: inline !important;
}

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" integrity="sha512-iecdLmaskl7CVkqkXNQ/ZH/XLlvWZOJyj7Yy7tcenmpD1ypASozpmT/E0iPtmFIB46ZmdtAc9eNBvH0H/ZpiBw==" crossorigin="anonymous" referrerpolicy="no-referrer" />


<div class="row">
  <div class="col-10">
    
  </div>
  <div class="col-2">
    
    <ul class="nav nav-pills flex-column mb-auto">
    <li class="nav-item">
        <a href="#" class="nav-link active" aria-current="page">
            <i class="fa-solid fa-book"></i>
            <span class="d-none nav-title">Bio</span>
        </a>
    </li>
    <li>
        <a class="nav-link" data-id="tags">
            <i class="fa-solid fa-tags"></i>
            <span class="d-none nav-title">Tags</span>
        </a>
    </li>
</ul>
    
  </div>
</div>

Answer 1

您无法为显示属性设置动画，但可以为不透明度设置动画。我删除了 util class d-none，更改了 opacity:0 上的 display:none 并设置了过渡属性。享受！ 有关过渡的更多信息https://developer.mozilla.org/en-US/docs/Web/CSS/transition

:root {
    --darkblack: #000615;
    --black: #0B1721;
    --lightblack: #141B37;
    --yellow: #F7C921;
    --darkyellow: #a28b2a;
    --cyan: #21B7FF;
    --darkcyan: #1c7eaf;
    --magenta: #FF217D;
    --darkmagenta: #531a3b;
}

.nav-title {
  opacity: 0;  
  transition: all 0.5s ease;
}

.nav {
  align-items: flex-end;
}

.nav-pills .nav-link {
  width: fit-content;
}

.nav-pills .nav-link.active {
   color: var(--black) !important;
   background-color: var(--cyan);
 }

.nav-pills .nav-link:not(.nav-link.active) {
  color: var(--cyan) !important;
  cursor: pointer;
}

.nav-pills .nav-link:hover > .nav-title {
  opacity: 1;
}

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" integrity="sha512-iecdLmaskl7CVkqkXNQ/ZH/XLlvWZOJyj7Yy7tcenmpD1ypASozpmT/E0iPtmFIB46ZmdtAc9eNBvH0H/ZpiBw==" crossorigin="anonymous" referrerpolicy="no-referrer" />


<div class="row">
  <div class="col-10">
    
  </div>
  <div class="col-2">
    
    <ul class="nav nav-pills flex-column mb-auto">
    <li class="nav-item">
        <a href="#" class="nav-link active" aria-current="page">
            <i class="fa-solid fa-book"></i>
            <span class="nav-title">Bio</span>
        </a>
    </li>
    <li>
        <a class="nav-link" data-id="tags">
            <i class="fa-solid fa-tags"></i>
            <span class="nav-title">Tags</span>
        </a>
    </li>
</ul>
    
  </div>
</div>