Question

如果您查看Toshiba's website，则会出现带有箭头的小鼠标图标。显然，他们像这样动画它：

function iconTop() {
$(".icon_tween").animate({
    opacity: 0,
    marginTop: "15px"
}, 1e3, function () {
    $(".icon_tween").css({
        marginTop: 0,
        opacity: 1
    }), iconTop()
})
}

..是否可以仅使用CSS制作完全相同的动画？

Answer 1

你也可以使用translate代替margin top，这样它就会更加独立于你的元素布局而且性能更高。

@-webkit-keyframes arrow-jump {
  0%   { opacity: 0;}
  100% { opacity: 1; 
    -webkit-transform: translateY(10px);
    -moz-transform: translateY(10px);
    -o-transform: translateY(10px);
    transform: translateY(10px);
    }  
}
#arrow {
  -webkit-animation: arrow-jump 1s infinite;
  -moz-animation:    arrow-jump 1s infinite
  -o-animation:      arrow-jump 1s infinite;
  animation:         arrow-jump 1s infinite;
}

demo

Answer 2

＆＃13;

body {
  background: black;
}

.arrow {
  position: fixed;
  bottom: 0;
  left: 50%;
  margin-left:-20px;
  width: 40px;
  height: 40px;
  background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4NCjwhLS0gR2VuZXJhdG9yOiBBZG9iZSBJbGx1c3RyYXRvciAxNi4wLjAsIFNWRyBFeHBvcnQgUGx1Zy1JbiAuIFNWRyBWZXJzaW9uOiA2LjAwIEJ1aWxkIDApICAtLT4NCjwhRE9DVFlQRSBzdmcgUFVCTElDICItLy9XM0MvL0RURCBTVkcgMS4xLy9FTiIgImh0dHA6Ly93d3cudzMub3JnL0dyYXBoaWNzL1NWRy8xLjEvRFREL3N2ZzExLmR0ZCI+DQo8c3ZnIHZlcnNpb249IjEuMSIgaWQ9IkxheWVyXzEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iNTEycHgiIGhlaWdodD0iNTEycHgiIHZpZXdCb3g9IjAgMCA1MTIgNTEyIiBlbmFibGUtYmFja2dyb3VuZD0ibmV3IDAgMCA1MTIgNTEyIiB4bWw6c3BhY2U9InByZXNlcnZlIj4NCjxwYXRoIGZpbGw9IiNGRkZGRkYiIGQ9Ik0yOTMuNzUxLDQ1NS44NjhjLTIwLjE4MSwyMC4xNzktNTMuMTY1LDE5LjkxMy03My42NzMtMC41OTVsMCwwYy0yMC41MDgtMjAuNTA4LTIwLjc3My01My40OTMtMC41OTQtNzMuNjcyICBsMTg5Ljk5OS0xOTBjMjAuMTc4LTIwLjE3OCw1My4xNjQtMTkuOTEzLDczLjY3MiwwLjU5NWwwLDBjMjAuNTA4LDIwLjUwOSwyMC43NzIsNTMuNDkyLDAuNTk1LDczLjY3MUwyOTMuNzUxLDQ1NS44Njh6Ii8+DQo8cGF0aCBmaWxsPSIjRkZGRkZGIiBkPSJNMjIwLjI0OSw0NTUuODY4YzIwLjE4LDIwLjE3OSw1My4xNjQsMTkuOTEzLDczLjY3Mi0wLjU5NWwwLDBjMjAuNTA5LTIwLjUwOCwyMC43NzQtNTMuNDkzLDAuNTk2LTczLjY3MiAgbC0xOTAtMTkwYy0yMC4xNzgtMjAuMTc4LTUzLjE2NC0xOS45MTMtNzMuNjcxLDAuNTk1bDAsMGMtMjAuNTA4LDIwLjUwOS0yMC43NzIsNTMuNDkyLTAuNTk1LDczLjY3MUwyMjAuMjQ5LDQ1NS44Njh6Ii8+DQo8L3N2Zz4=);
  background-size: contain;
  
}

.bounce {
    -webkit-animation: bounce 2s infinite;
    animation: bounce 2s infinite;
}

/* Scroll down indicator (bouncing) */
@-webkit-keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    -webkit-transform: translateY(0); }
  40% {
    -webkit-transform: translateY(-30px); }
  60% {
    -webkit-transform: translateY(-15px); } }
@-moz-keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    -moz-transform: translateY(0); }
  40% {
    -moz-transform: translateY(-30px); }
  60% {
    -moz-transform: translateY(-15px); } }
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0); }
  40% {
    -webkit-transform: translateY(-30px);
    -moz-transform: translateY(-30px);
    -ms-transform: translateY(-30px);
    -o-transform: translateY(-30px);
    transform: translateY(-30px); }
  60% {
    -webkit-transform: translateY(-15px);
    -moz-transform: translateY(-15px);
    -ms-transform: translateY(-15px);
    -o-transform: translateY(-15px);
    transform: translateY(-15px); } }

＆＃13;

<div class="arrow bounce">

＆＃13;

Answer 3

当然，为什么不呢？

小提琴：http://jsfiddle.net/98W5U/3/

代码：

@-webkit-keyframes toshiba {
    from{
        margin-top:0;
        opacity: 1;       
    }
    to{
        margin-top: 30px;
        opacity: 0;
    }
}
div {
    -webkit-animation: toshiba 2s linear infinite;
}

记住所有浏览器前缀，不要指望它可以在旧浏览器上运行（IE，呵呵！）。

修改这里也是箭头：jsfiddle

仅使用CSS制作箭头动画

3 个答案: