【发布时间】:2019-04-21 05:57:43
【问题描述】:
我创建了一个类似边框的关键帧 CSS 样式。当我悬停按钮时,类似边框的动画应该从右上角开始到左上角,然后到左下角,然后到右下角,最后再到右上角。当我悬停按钮时,上一个序列应该发生并且已经创建。然而;悬停时,按钮内的文本会移动,这使按钮看起来很奇怪。
我查看了question 的答案,但它不适用于我的情况,因为我没有在悬停时使用边框样式。相反,我正在更改三个跨度的背景颜色、宽度和高度,而不是边框。
如何通过创建动画的方法防止这种抖动?
代码笔:https://codepen.io/Tes3awy/pen/ZZRpBW
HTML
<div class="wrapper">
<a class="custom-btn" href="https://mince.34way.com/about/" title="About">
About Us
<span class="border-top"></span>
<span class="border-right"></span>
<span class="border-bottom"></span>
<span class="border-left"></span>
</a>
</div>
CSS
body {
position: relative;
height: 100vh;
}
.wrapper {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.custom-btn {
position: relative;
width: 183px;
height: 55px;
line-height: 55px;
display: inline-block;
text-align: center;
text-transform: uppercase;
margin: 0 auto;
border: 2px solid #77a942;
color: #77a942;
text-decoration: none;
}
span[class^="border-"] {
opacity: 0;
}
.border-top {
position: absolute;
top: -2px;
right: 0;
width: 100%;
height: 3px;
background-color: transparent;
}
.border-left {
position: absolute;
top: 0;
left: -2px;
width: 3px;
height: 100%;
background-color: transparent;
}
.border-bottom {
position: absolute;
left: 0;
bottom: -2px;
width: 100%;
height: 3px;
background-color: transparent;
}
.border-right {
position: absolute;
bottom: 0;
right: -2px;
width: 3px;
height: 100%;
background-color: transparent;
}
.custom-btn:hover .border-top {
animation: animateTop .2s 1 alternate ease forwards;
}
.custom-btn:hover .border-left {
animation: animateLeft .2s 1 alternate ease forwards;
animation-delay: .2s;
}
.custom-btn:hover .border-bottom {
animation: animateBottom .2s 1 alternate ease forwards;
animation-delay: .4s;
}
.custom-btn:hover .border-right {
animation: animateRight .2s 1 alternate ease forwards;
animation-delay: .6s;
}
@keyframes animateTop {
0% {
width: 0;
height: 0;
opacity: 0;
background-color: #77a942;
}
50% {
width: 50%;
height: 3px;
opacity: 1;
background-color: #77a942;
}
100% {
width: 100%;
height: 3px;
opacity: 1;
background-color: #77a942;
}
}
@keyframes animateLeft {
0% {
width: 0;
height: 0;
opacity: 0;
background-color: #77a942;
}
50% {
width: 3px;
height: 50%;
opacity: 1;
background-color: #77a942;
}
100% {
width: 3px;
height: 100%;
opacity: 1;
background-color: #77a942;
}
}
@keyframes animateBottom {
0% {
width: 0;
height: 0;
opacity: 0;
background-color:#77a942;
}
50% {
width: 50%;
height: 3px;
opacity: 1;
background-color:#77a942;
}
100% {
width: 100%;
height: 3px;
opacity: 1;
background-color:#77a942;
}
}
@keyframes animateRight {
0% {
width: 0;
height: 0;
opacity: 0;
background-color: #77a942;
}
50% {
width: 3px;
height: 50%;
opacity: 1;
background-color: #77a942;
}
100% {
width: 3px;
height: 100%;
opacity: 1;
background-color: #77a942;
}
}
【问题讨论】:
-
可能是我,但我看不到里面的文字有任何抖动
-
我的也不行——我用的是 Chrome。
-
@kukkuz 你试过 CodePen 上的代码了吗?如果是,请尝试放大到 125% 看看是否抖动?
-
@Tes3awy 我放大了一点,是的,我看到了一点点震动......
-
@kukkuz 我怎样才能避免这种微不足道的震动?
标签: html css css-animations keyframe