CSS3实现围绕任何点来旋转-续_html/css_WEB-ITnose
前天写过一篇文章 "CSS3实现围绕任何点来旋转",主要是实现围绕点来旋转.
今天我们继续用另外一种方式实现.
我们先来看代码
Html
<div class="smile">☺</div>
Css
.smile{
margin:100px auto;
width: 80px;
height: 80px;
font-size: 80px;
animation: action 10s linear infinite;
}
@keyframes action {
from {
transform: rotate(0deg) translate(100px) rotate(0deg);
}
to {
transform: rotate(360deg) translate(100px) rotate(-360deg);
}
}
其实从代码量来说,比之前的简化了不少. HTML使用的只有一个标签,也只使用了一个动画.
我们主要还是从动画入手, 在这里transform里面我们加入了三种动画,第一种和 第三保证的是笑脸能够旋转起来,保证笑脸是正脸.
如果不需要正脸,可以去掉一个.
中间那个动画是平移动画,也就是在选择的同时,笑脸做平移运动.这样就形成了围绕旋转运动.
要确定这个围绕点,得控制笑脸的位置,我这里的代码就直接是用margin来控制的.如果需要设置不同的点,可以使用定位来控制位置.这样灵活一点.(代码大家就可以自己敲一下,试一下效果)
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