CSS实现卡片鼠标悬停效果(文字从下向上滚动在图片上)
本文介绍一个卡片鼠标悬停效果，当鼠标移到图片上时，描述文字从下到上滚动在图片上。本实例是纯CSS实现，方便迁移使用。
demodownload
HTML
<div class="card">
<div class="content">
<h2 class="title">Desert Destinations</h2>
<p class="copy">It's the desert you've always dreamed of</p>
<button class="btn">Book Now</button>
</div>
</div>
图片盒子是一个div，它的class值是card，它定位图片的位置、大小等样式。
盒子里面有一个div，它的class值是content，它是文字内容的容器。
div里面的h2标签，class值是title，这是文字标题。
div里面的p标签，class值是copy，这是文字描述。
div里面的button标签，class值是btn，这是一个按钮链接。
CSS
.card {
position: relative;
display: flex;
align-items: flex-end;
overflow: hidden;
padding: 1rem;
width: 100%;
text-align: center;
color: whitesmoke;
background-color: whitesmoke;
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1), 0 2px 2px rgba(0, 0, 0, 0.1), 0 4px 4px rgba(0, 0, 0, 0.1), 0 8px 8px rgba(0, 0, 0, 0.1), 0 16px 16px rgba(0, 0, 0, 0.1);
}
@media (min-width: 600px) {
.card {
height: 350px;
}
}
.card:before {
content: "";
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 110%;
background-size: cover;
background-position: 0 0;
transition: transform calc(var(--d) * 1.5) var(--e);
pointer-events: none;
}
.card:after {
content: "";
display: block;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 200%;
pointer-events: none;
background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.009) 11.7%, rgba(0, 0, 0, 0.034) 22.1%, rgba(0, 0, 0, 0.072) 31.2%, rgba(0, 0, 0, 0.123) 39.4%, rgba(0, 0, 0, 0.182) 46.6%, rgba(0, 0, 0, 0.249) 53.1%, rgba(0, 0, 0, 0.32) 58.9%, rgba(0, 0, 0, 0.394) 64.3%, rgba(0, 0, 0, 0.468) 69.3%, rgba(0, 0, 0, 0.54) 74.1%, rgba(0, 0, 0, 0.607) 78.8%, rgba(0, 0, 0, 0.668) 83.6%, rgba(0, 0, 0, 0.721) 88.7%, rgba(0, 0, 0, 0.762) 94.1%, rgba(0, 0, 0, 0.79) 100%);
transform: translateY(-50%);
transition: transform calc(var(--d) * 2) var(--e);
}
.card:nth-child(1):before {
background-image: url(photo-1.jpg);
}
.card:nth-child(2):before {
background-image: url(photo-2.jpg);
}
.card:nth-child(3):before {
background-image: url(photo-3.jpg);
}
.card:nth-child(4):before {
background-image: url(photo-4.jpg);
}
.content {
position: relative;
display: flex;
flex-direction: column;
align-items: center;
width: 100%;
padding: 1rem;
transition: transform var(--d) var(--e);
z-index: 1;
}
.content > * + * {
margin-top: 1rem;
}
.title {
font-size: 1.3rem;
font-weight: bold;
line-height: 1.2;
}
.copy {
font-family: var(--font-serif);
font-size: 1.125rem;
font-style: italic;
line-height: 1.35;
}
.btn {
cursor: pointer;
margin-top: 1.5rem;
padding: 0.75rem 1.5rem;
font-size: 0.65rem;
font-weight: bold;
letter-spacing: 0.025rem;
text-transform: uppercase;
color: white;
background-color: black;
border: none;
}
.btn:hover {
background-color: #0d0d0d;
}
.btn:focus {
outline: 1px dashed yellow;
outline-offset: 3px;
}
@media (hover: hover) and (min-width: 600px) {
.card:after {
transform: translateY(0);
}
.content {
transform: translateY(calc(100% - 4.5rem));
}
.content > *:not(.title) {
opacity: 0;
transform: translateY(1rem);
transition: transform var(--d) var(--e), opacity var(--d) var(--e);
}
.card:hover,
.card:focus-within {
align-items: center;
}
.card:hover:before,
.card:focus-within:before {
transform: translateY(-4%);
}
.card:hover:after,
.card:focus-within:after {
transform: translateY(-50%);
}
.card:hover .content,
.card:focus-within .content {
transform: translateY(0);
}
.card:hover .content > *:not(.title),
.card:focus-within .content > *:not(.title) {
opacity: 1;
transform: translateY(0);
transition-delay: calc(var(--d) / 8);
}
.card:focus-within:before, .card:focus-within:after,
.card:focus-within .content,
.card:focus-within .content > *:not(.title) {
transition-duration: 0s;
}
}
卡片图片在css里设置，background-image的url属性值可以HTTP网络链接，也可以是本机图片，注意文件路径写正确。
.card:nth-child(1):before {
background-image: url(photo-1.jpg);
}
.card:nth-child(2):before {
background-image: url(photo-2.jpg);
}
.card:nth-child(3):before {
background-image: url(photo-3.jpg);
}
.card:nth-child(4):before {
background-image: url(photo-4.jpg);
}
总结
本文介绍了一个卡片鼠标悬停效果，纯CSS实现，无需用到Javascript编程，也无需用到第三方插件，方便迁移使用。
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