CSS CSS3 动画边框颜色
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CSS3 animate border color
提问by coure2011
I want to animate borders of an element using CSS3, whether it's in hover state or normal state. Can someone provide me a code snippet for this or can guide?
我想使用 CSS3 为元素的边框设置动画，无论它处于悬停状态还是正常状态。有人可以为此提供代码片段或可以指导吗？
I can do this using jQuery but looking for some pure CSS3 solution.
我可以使用 jQuery 做到这一点，但正在寻找一些纯 CSS3 解决方案。
回答by Zevan
You can use a CSS3 transitionfor this. Have a look at this example:
您可以transition为此使用 CSS3 。看看这个例子：
Here is the main code:
下面是主要代码：
#box {
position : relative;
width : 100px;
height : 100px;
background-color : gray;
border : 5px solid black;
-webkit-transition : border 500ms ease-out;
-moz-transition : border 500ms ease-out;
-o-transition : border 500ms ease-out;
transition : border 500ms ease-out;
}
#box:hover {
border : 10px solid red;
}
回答by Harden Rahul
You can try this also...
你也可以试试这个...
button {
background: none;
border: 0;
box-sizing: border-box;
margin: 1em;
padding: 1em 2em;
box-shadow: inset 0 0 0 2px #f45e61;
color: #f45e61;
font-size: inherit;
font-weight: 700;
position: relative;
vertical-align: middle;
}
button::before, button::after {
box-sizing: inherit;
content: '';
position: absolute;
width: 100%;
height: 100%;
}
.draw {
-webkit-transition: color 0.25s;
transition: color 0.25s;
}
.draw::before, .draw::after {
border: 2px solid transparent;
width: 0;
height: 0;
}
.draw::before {
top: 0;
left: 0;
}
.draw::after {
bottom: 0;
right: 0;
}
.draw:hover {
color: #60daaa;
}
.draw:hover::before, .draw:hover::after {
width: 100%;
height: 100%;
}
.draw:hover::before {
border-top-color: #60daaa;
border-right-color: #60daaa;
-webkit-transition: width 0.25s ease-out, height 0.25s ease-out 0.25s;
transition: width 0.25s ease-out, height 0.25s ease-out 0.25s;
}
.draw:hover::after {
border-bottom-color: #60daaa;
border-left-color: #60daaa;
-webkit-transition: border-color 0s ease-out 0.5s, width 0.25s ease-out 0.5s, height 0.25s ease-out 0.75s;
transition: border-color 0s ease-out 0.5s, width 0.25s ease-out 0.5s, height 0.25s ease-out 0.75s;
}<section class="buttons">
<button class="draw">Draw</button>
</section回答by Tahir
If you need the transition to run infinitely, try the below example:
如果您需要无限运行过渡，请尝试以下示例：
#box {
position: relative;
width: 100px;
height: 100px;
background-color: gray;
border: 5px solid black;
display: block;
}
#box:hover {
border-color: red;
animation-name: flash_border;
animation-duration: 2s;
animation-timing-function: linear;
animation-iteration-count: infinite;
-webkit-animation-name: flash_border;
-webkit-animation-duration: 2s;
-webkit-animation-timing-function: linear;
-webkit-animation-iteration-count: infinite;
-moz-animation-name: flash_border;
-moz-animation-duration: 2s;
-moz-animation-timing-function: linear;
-moz-animation-iteration-count: infinite;
}
@keyframes flash_border {
0% {
border-color: red;
}
50% {
border-color: black;
}
100% {
border-color: red;
}
}
@-webkit-keyframes flash_border {
0% {
border-color: red;
}
50% {
border-color: black;
}
100% {
border-color: red;
}
}
@-moz-keyframes flash_border {
0% {
border-color: red;
}
50% {
border-color: black;
}
100% {
border-color: red;
}
}<div id="box">roll over me</div>