所以我正在为我网页上的一些行执行此操作。
@keyframes dropHeader {
0% {
height: 0px;
}
100% {
height: 100%;
}
}
.slant-decor {
left: 50%;
height: 100%;
position: fixed;
display: inline-flex;
animation-name: dropHeader;
animation-iteration-count: 1;
animation-timing-function: ease-out;
animation-duration: 0.6s;
}
.slant-decor:after {
width: 5px;
height: 100%;
background-color: rgba(0, 0, 0, 0.55);
content: "";
position: relative;
margin-left: -5px;
transform: skewX(-30deg);
display: inline-block;
}
.slant-decor div {
width: 19px;
height: 100%;
display: inline-block;
margin-left: -4px;
-ms-transform: skewX(-30deg); /* IE 9 */
-webkit-transform: skewX(-30deg); /* Safari */
transform: skewX(-30deg); /* Standard syntax */
}
.decor-orange {
background-color: orange;
}
.decor-red {
background-color: red;
}
.decor-green {
background-color: green;
}
<div class="slant-decor">
<div class="decor-red"></div>
<div class="decor-orange"></div>
<div class="decor-green"></div>
</div>
截至目前,.slant-decor
上的动画工作正常,但是 - 如您所见,它对线条造成了一种奇怪的效果。我想实现的是动画也遵循倾斜角度,创建一种效果,其中线条将从页面顶部以正确的角度滑入。我怎样才能做到这一点?
如果我的理解是正确的,设置transform-origin: right top
会产生您正在寻找的效果。transform-origin
的默认值为 50% 50%
(元素的中心中点)。当您对高度进行动画处理时,此点会不断变化,因此会产生奇怪的效果。如果将transform-origin
设置为固定点,则可以避免该问题。
@keyframes dropHeader {
0% {
height: 0px;
}
100% {
height: 100%;
}
}
.slant-decor {
left: 50%;
height: 300px;
position: fixed;
display: inline-flex;
animation-name: dropHeader;
animation-iteration-count: 1;
animation-timing-function: ease-out;
animation-duration: 0.6s;
}
.slant-decor:after {
width: 5px;
height: 100%;
background-color: rgba(0, 0, 0, 0.55);
content: "";
position: relative;
margin-left: -5px;
transform-origin: right top;
transform: skewX(-30deg);
display: inline-block;
}
.slant-decor div {
width: 19px;
height: 100%;
display: inline-block;
margin-left: -4px;
transform-origin: right top;
transform: skewX(-30deg);
}
.decor-orange {
background-color: orange;
}
.decor-red {
background-color: red;
}
.decor-green {
background-color: green;
}
<div class="slant-decor">
<div class="decor-red"></div>
<div class="decor-orange"></div>
<div class="decor-green"></div>
</div>