如何实现平滑的“box-shadow”动画效果_html/css_WEB-ITnose

/* The slow way */.make-it-slow {  box-shadow: 0 1px 2px rgba(0,0,0,0.15);  transition: box-shadow 0.3s ease-in-out:}/* 鼠标悬停实现更大阴影的过渡 */.make-it-slow:hover {  box-shadow: 0 5px 15px rgba(0,0,0,0.3);}/* The fast way */.make-it-fast {  box-shadow: 0 1px 2px rgba(0,0,0,0.15);}/* 设置更大的阴影并将之隐藏 */.make-it-fast::after {  box-shadow: 0 5px 15px rgba(0,0,0,0.3);  opacity: 0;  transition: opacity 0.3s ease-in-out:}/* 鼠标悬停时实现更大阴影的过渡显示 */.make-it-fast:hover::after {  opacity: 1;}

/* 创建一个简单白色盒子,并添加阴影 */.box {  position: relative;  display: inline-block;  width: 100px;  height: 100px;  border-radius: 5px;  background-color: #fff;  box-shadow: 0 1px 2px rgba(0,0,0,0.15);  transition: all 0.3s ease-in-out;}/* 创建隐藏的伪元素 *//* 最终样式包含阴影 */.box::after {  content: '';  position: absolute;  z-index: -1;  width: 100%;  height: 100%;  opacity: 0;  border-radius: 5px;  box-shadow: 0 5px 15px rgba(0,0,0,0.3);  transition: opacity 0.3s ease-in-out;}

/* 放大盒子 */.box:hover {  transform: scale(1.2, 1.2);}/* 伪元素更大阴影的淡化 */.box:hover::after {  opacity: 1;}

.box {  position: relative;  display: inline-block;  width: 100px;  height: 100px;  background-color: #fff;  border-radius: 5px;  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);  border-radius: 5px;  -webkit-transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);  transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);}.box::after {  content: "";  border-radius: 5px;  position: absolute;  z-index: -1;  top: 0;  left: 0;  width: 100%;  height: 100%;  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);  opacity: 0;  -webkit-transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);  transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);}.box:hover {  -webkit-transform: scale(1.25, 1.25);  transform: scale(1.25, 1.25);}.box:hover::after {    opacity: 1;}