问题[css-animation]

如何使它在悬停之前也有下划线

示例：www.studioorhe.com

a {
  color: black;
  position: relative;
  cursor: pointer;
}

a:after {
  border: none;
  content: "";
  display: block;
  position: absolute;
  right: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: black;
  transition: width 0.5s;
}

a:hover:before {
  border-bottom: 1px solid black;
}

a:hover:after {
  border: none;
  content: "";
  width: 100%;
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  background-color: black;
  transition: width 0.5s;
}

<a href='#'>Пример ссылки</a>

我有这样的问题

.title1{
  opacity: 0;
  animation: 3s 2s anim-lineUp ease-out;
}

@keyframes anim-lineUp {
  0% {
    opacity: 0;
    transform: translateY(80%);
  }
  20% {
    opacity: 0;
  }
  50% {
    opacity: 1;
    transform: translateY(0%);
  }
  100% {
    opacity: 1;

  }
}

如何让它在动画开始之前延迟块不可见，如果你设置不透明度，就像我的例子一样，那么在动画之后块也会消失

有一个带边框的按钮：

将鼠标悬停在按钮上时，边框应滚动 360 度，而按钮本身应保持静止。这是代码：

.menu__button_animat {
    background-image: conic-gradient( #755efc 90deg, #fff 90deg 175deg, #755efc 150deg );
}
.menu__button-close {
    height: 60px;
    width: 60px;
    border: none;
    background: #F8F6FF url(https://i.ibb.co/JnNj5GZ/Icon-2.png) center no-repeat;
    z-index: 100;
    border-radius: 50%;
    position: absolute;
    top: 4px;
    left: 4px;
}
.mega-menu__circle-border {
    display: inline-block;
    width: 68px;
    height: 68px;
    position: relative;
    border-radius: 50%;
}
.mega-menu__circle-border:after {
    border-radius: 50%;
    display: block;
    content: "";
    background: #fff;
    position: absolute;
    left: 2px;
    top: 2px;
    height: 64px;
    width: 64px;
}
.menu__button_animat:hover  {
    animation: progress 1s linear forwards;
}
@keyframes progress {
    100% {transform:rotate(360deg);}
}

<div class="mega-menu__circle-border menu__button_animat ">
  <button class="menu__button-close "></button>
</div>

图标本身是通过 注册的::before，无论如何，按钮的旋转仍然存在。请告诉我，我错过了什么？

告诉我为什么当你再次点击元素时，会有 2 秒的停顿？那些。我按第一次 - 事件立即触发，我按第二次 - 事件在 2 秒后触发。如何消除这 2 秒的延迟？

    if (document.querySelector('.tab-description')?.innerHTML) {
   document.querySelector('.tab-description').onclick = function () {
      document.querySelector('.woocommerce-Tabs-panel--description').classList.toggle('tab-active');
   }
}
if (document.querySelector('.tab-reviews')?.innerHTML) {
   document.querySelector('.tab-reviews').onclick = function () {
      document.querySelector('.woocommerce-Reviews').classList.toggle('tab-active');
   }
}

css

.woocommerce-Tabs-panel--description {
   max-height: 0;
   transition: all 2s ease 0s;
   overflow: hidden;
}
.woocommerce-Reviews {
   max-height: 0;
   transition: all 2s ease 0s;
   overflow: hidden;
}
.tab-active {
   max-height: 800px;
   transition: all 2s ease 0s;
}

行家，遇到这样的问题。你需要离开css

我试着用 translateZ 来做，但我们怎样才能转向右边呢？