HTML div class=spinner/div CSS .spinner { width: 40px; height: 40px; background-color: #333; margin: 100px auto; -webkit-animation: sk-rotateplane 1.2s infinite ease-in-out; animation: sk-rotateplane 1.2s infinite ease-in-out;}@-webkit-keyf
HTML
<div class="spinner"></div>
CSS
.spinner {
width: 40px;
height: 40px;
background-color: #333;
margin: 100px auto;
-webkit-animation: sk-rotateplane 1.2s infinite ease-in-out;
animation: sk-rotateplane 1.2s infinite ease-in-out;
}
@-webkit-keyframes sk-rotateplane {
0% { -webkit-transform: perspective(120px) }
50% { -webkit-transform: perspective(120px) rotateY(180deg) }
100% { -webkit-transform: perspective(120px) rotateY(180deg) rotateX(180deg) }
}
@keyframes sk-rotateplane {
0% {
transform: perspective(120px) rotateX(0deg) rotateY(0deg);
-webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg)
} 50% {
transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
-webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg)
} 100% {
transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
-webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
}
}
解析：定义一个 div元素，设置边长为 40px 背景白色的正方形，然后设置循环翻转动画实现该加载效果动画
perspective 属性定义 3D 元素距视图的距离
HTML
<div class="sk-chase"> <div class="sk-chase-dot"></div> <div class="sk-chase-dot"></div> <div class="sk-chase-dot"></div> <div class="sk-chase-dot"></div> <div class="sk-chase-dot"></div> <div class="sk-chase-dot"></div> </div>
CSS
.sk-chase {
width: 40px;
height: 40px;
position: relative;
animation: sk-chase 2.5s infinite linear both;
}
.sk-chase-dot {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
animation: sk-chase-dot 2.0s infinite ease-in-out both;
}
.sk-chase-dot:before {
content: '';
display: block;
width: 25%;
height: 25%;
background-color: #fff;
border-radius: 100%;
animation: sk-chase-dot-before 2.0s infinite ease-in-out both;
}
.sk-chase-dot:nth-child(1) { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2) { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3) { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4) { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5) { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6) { animation-delay: -0.6s; }
.sk-chase-dot:nth-child(1):before { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2):before { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3):before { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4):before { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5):before { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6):before { animation-delay: -0.6s; }
@keyframes sk-chase {
100% { transform: rotate(360deg); }
}
@keyframes sk-chase-dot {
80%, 100% { transform: rotate(360deg); }
}
@keyframes sk-chase-dot-before {
50% {
transform: scale(0.4);
} 100%, 0% {
transform: scale(1.0);
}
}
解析：定义一个父元素 div，内含六个白色实心圆点，添加旋转动画，通过设置不同的延迟时间来达到依次出现的效果
HTML
<div class="spinner"> <div class="double-bounce1"></div> <div class="double-bounce2"></div> </div>
CSS
.spinner {
width: 40px;
height: 40px;
position: relative;
margin: 100px auto;
}
.double-bounce1, .double-bounce2 {
width: 100%;
height: 100%;
border-radius: 50%;
background-color: #333;
opacity: 0.6;
position: absolute;
top: 0;
left: 0;
-webkit-animation: sk-bounce 2.0s infinite ease-in-out;
animation: sk-bounce 2.0s infinite ease-in-out;
}
.double-bounce2 {
-webkit-animation-delay: -1.0s;
animation-delay: -1.0s;
}
@-webkit-keyframes sk-bounce {
0%, 100% { -webkit-transform: scale(0.0) }
50% { -webkit-transform: scale(1.0) }
}
@keyframes sk-bounce {
0%, 100% {
transform: scale(0.0);
-webkit-transform: scale(0.0);
} 50% {
transform: scale(1.0);
-webkit-transform: scale(1.0);
}
}
解析：两个子元素 div 实现半透明的圆形，设置绝对定位重叠在一起，然后设置相同的动画通过不同的延迟时间交替放大缩小。
HTML
<div class="spinner"> <div class="rect1"></div> <div class="rect2"></div> <div class="rect3"></div> <div class="rect4"></div> <div class="rect5"></div> </div>
CSS
.spinner {
margin: 100px auto;
width: 50px;
height: 40px;
text-align: center;
font-size: 10px;
}
.spinner > div {
background-color: #333;
height: 100%;
width: 6px;
display: inline-block;
-webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
animation: sk-stretchdelay 1.2s infinite ease-in-out;
}
.spinner .rect2 {
-webkit-animation-delay: -1.1s;
animation-delay: -1.1s;
}
.spinner .rect3 {
-webkit-animation-delay: -1.0s;
animation-delay: -1.0s;
}
.spinner .rect4 {
-webkit-animation-delay: -0.9s;
animation-delay: -0.9s;
}
.spinner .rect5 {
-webkit-animation-delay: -0.8s;
animation-delay: -0.8s;
}
@-webkit-keyframes sk-stretchdelay {
0%, 40%, 100% { -webkit-transform: scaleY(0.4) }
20% { -webkit-transform: scaleY(1.0) }
}
@keyframes sk-stretchdelay {
0%, 40%, 100% {
transform: scaleY(0.4);
-webkit-transform: scaleY(0.4);
} 20% {
transform: scaleY(1.0);
-webkit-transform: scaleY(1.0);
}
}
解析：在类名为 spinner元素下有五个 div 实现的长方形元素，设置Y轴的缩放，通过不同的延迟时间来达到依次变化的效果。
HTML
<div class="spinner"> <div class="cube1"></div> <div class="cube2"></div> </div>
CSS
.cube1, .cube2 {
background-color: #333;
width: 15px;
height: 15px;
position: absolute;
top: 0;
left: 0;
-webkit-animation: sk-cubemove 1.8s infinite ease-in-out;
animation: sk-cubemove 1.8s infinite ease-in-out;
}
.cube2 {
-webkit-animation-delay: -0.9s;
animation-delay: -0.9s;
}
@-webkit-keyframes sk-cubemove {
25% { -webkit-transform: translateX(42px) rotate(-90deg) scale(0.5) }
50% { -webkit-transform: translateX(42px) translateY(42px) rotate(-180deg) }
75% { -webkit-transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5) }
100% { -webkit-transform: rotate(-360deg) }
}
@keyframes sk-cubemove {
25% {
transform: translateX(42px) rotate(-90deg) scale(0.5);
-webkit-transform: translateX(42px) rotate(-90deg) scale(0.5);
} 50% {
transform: translateX(42px) translateY(42px) rotate(-179deg);
-webkit-transform: translateX(42px) translateY(42px) rotate(-179deg);
} 50.1% {
transform: translateX(42px) translateY(42px) rotate(-180deg);
-webkit-transform: translateX(42px) translateY(42px) rotate(-180deg);
} 75% {
transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5);
-webkit-transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5);
} 100% {
transform: rotate(-360deg);
-webkit-transform: rotate(-360deg);
}
}
解析：两个子元素实现白色的方块，添加动画属性，在X轴和Y轴分别设置移动距离和缩放，通过不同的延迟时间来分离他们，rorate实现围绕中心旋转。
HTML
<div class="spinner"></div>
CSS
.spinner {
width: 40px;
height: 40px;
margin: 100px auto;
background-color: #333;
border-radius: 100%;
-webkit-animation: sk-scaleout 1.0s infinite ease-in-out;
animation: sk-scaleout 1.0s infinite ease-in-out;
}
@-webkit-keyframes sk-scaleout {
0% { -webkit-transform: scale(0) }
100% {
-webkit-transform: scale(1.0);
opacity: 0;
}
}
@keyframes sk-scaleout {
0% {
-webkit-transform: scale(0);
transform: scale(0);
} 100% {
-webkit-transform: scale(1.0);
transform: scale(1.0);
opacity: 0;
}
}
解析：唯一的 div元素实现白色背景圆点，通过设置缩放和透明度实现呼吸灯的效果。
HTML
<div class="spinner"> <div class="dot1"></div> <div class="dot2"></div> </div>
CSS
.spinner {
margin: 100px auto;
width: 40px;
height: 40px;
position: relative;
text-align: center;
-webkit-animation: sk-rotate 2.0s infinite linear;
animation: sk-rotate 2.0s infinite linear;
}
.dot1, .dot2 {
width: 60%;
height: 60%;
display: inline-block;
position: absolute;
top: 0;
background-color: #333;
border-radius: 100%;
-webkit-animation: sk-bounce 2.0s infinite ease-in-out;
animation: sk-bounce 2.0s infinite ease-in-out;
}
.dot2 {
top: auto;
bottom: 0;
-webkit-animation-delay: -1.0s;
animation-delay: -1.0s;
}
@-webkit-keyframes sk-rotate { 100% { -webkit-transform: rotate(360deg) }}
@keyframes sk-rotate { 100% { transform: rotate(360deg); -webkit-transform: rotate(360deg) }}
@-webkit-keyframes sk-bounce {
0%, 100% { -webkit-transform: scale(0.0) }
50% { -webkit-transform: scale(1.0) }
}
@keyframes sk-bounce {
0%, 100% {
transform: scale(0.0);
-webkit-transform: scale(0.0);
} 50% {
transform: scale(1.0);
-webkit-transform: scale(1.0);
}
}
解析：两个实心圆形围绕中心做循环的缩放旋转运动，因为不同的延迟时间来达到它们同一时间呈现相反的表现。
HTML
<div class="spinner"> <div class="bounce1"></div> <div class="bounce2"></div> <div class="bounce3"></div> </div>
CSS
.spinner {
margin: 100px auto 0;
width: 70px;
text-align: center;
}
.spinner > div {
width: 18px;
height: 18px;
background-color: #333;
border-radius: 100%;
display: inline-block;
-webkit-animation: sk-bouncedelay 1.4s infinite ease-in-out both;
animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}
.spinner .bounce1 {
-webkit-animation-delay: -0.32s;
animation-delay: -0.32s;
}
.spinner .bounce2 {
-webkit-animation-delay: -0.16s;
animation-delay: -0.16s;
}
@-webkit-keyframes sk-bouncedelay {
0%, 80%, 100% { -webkit-transform: scale(0) }
40% { -webkit-transform: scale(1.0) }
}
@keyframes sk-bouncedelay {
0%, 80%, 100% {
-webkit-transform: scale(0);
transform: scale(0);
} 40% {
-webkit-transform: scale(1.0);
transform: scale(1.0);
}
}
解析：三个实色圆形横向排列，线性动画 scale从0到1，通过给它们不同的延迟时间，呈现依次交替的效果。
HTML
<div class="sk-circle"> <div class="sk-circle1 sk-child"></div> <div class="sk-circle2 sk-child"></div> <div class="sk-circle3 sk-child"></div> <div class="sk-circle4 sk-child"></div> <div class="sk-circle5 sk-child"></div> <div class="sk-circle6 sk-child"></div> <div class="sk-circle7 sk-child"></div> <div class="sk-circle8 sk-child"></div> <div class="sk-circle9 sk-child"></div> <div class="sk-circle10 sk-child"></div> <div class="sk-circle11 sk-child"></div> <div class="sk-circle12 sk-child"></div> </div>
CSS
.sk-circle {
margin: 100px auto;
width: 40px;
height: 40px;
position: relative;
}
.sk-circle .sk-child {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
}
.sk-circle .sk-child:before {
content: '';
display: block;
margin: 0 auto;
width: 15%;
height: 15%;
background-color: #333;
border-radius: 100%;
-webkit-animation: sk-circleBounceDelay 1.2s infinite ease-in-out both;
animation: sk-circleBounceDelay 1.2s infinite ease-in-out both;
}
.sk-circle .sk-circle2 {
-webkit-transform: rotate(30deg);
-ms-transform: rotate(30deg);
transform: rotate(30deg); }
.sk-circle .sk-circle3 {
-webkit-transform: rotate(60deg);
-ms-transform: rotate(60deg);
transform: rotate(60deg); }
.sk-circle .sk-circle4 {
-webkit-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg); }
.sk-circle .sk-circle5 {
-webkit-transform: rotate(120deg);
-ms-transform: rotate(120deg);
transform: rotate(120deg); }
.sk-circle .sk-circle6 {
-webkit-transform: rotate(150deg);
-ms-transform: rotate(150deg);
transform: rotate(150deg); }
.sk-circle .sk-circle7 {
-webkit-transform: rotate(180deg);
-ms-transform: rotate(180deg);
transform: rotate(180deg); }
.sk-circle .sk-circle8 {
-webkit-transform: rotate(210deg);
-ms-transform: rotate(210deg);
transform: rotate(210deg); }
.sk-circle .sk-circle9 {
-webkit-transform: rotate(240deg);
-ms-transform: rotate(240deg);
transform: rotate(240deg); }
.sk-circle .sk-circle10 {
-webkit-transform: rotate(270deg);
-ms-transform: rotate(270deg);
transform: rotate(270deg); }
.sk-circle .sk-circle11 {
-webkit-transform: rotate(300deg);
-ms-transform: rotate(300deg);
transform: rotate(300deg); }
.sk-circle .sk-circle12 {
-webkit-transform: rotate(330deg);
-ms-transform: rotate(330deg);
transform: rotate(330deg); }
.sk-circle .sk-circle2:before {
-webkit-animation-delay: -1.1s;
animation-delay: -1.1s; }
.sk-circle .sk-circle3:before {
-webkit-animation-delay: -1s;
animation-delay: -1s; }
.sk-circle .sk-circle4:before {
-webkit-animation-delay: -0.9s;
animation-delay: -0.9s; }
.sk-circle .sk-circle5:before {
-webkit-animation-delay: -0.8s;
animation-delay: -0.8s; }
.sk-circle .sk-circle6:before {
-webkit-animation-delay: -0.7s;
animation-delay: -0.7s; }
.sk-circle .sk-circle7:before {
-webkit-animation-delay: -0.6s;
animation-delay: -0.6s; }
.sk-circle .sk-circle8:before {
-webkit-animation-delay: -0.5s;
animation-delay: -0.5s; }
.sk-circle .sk-circle9:before {
-webkit-animation-delay: -0.4s;
animation-delay: -0.4s; }
.sk-circle .sk-circle10:before {
-webkit-animation-delay: -0.3s;
animation-delay: -0.3s; }
.sk-circle .sk-circle11:before {
-webkit-animation-delay: -0.2s;
animation-delay: -0.2s; }
.sk-circle .sk-circle12:before {
-webkit-animation-delay: -0.1s;
animation-delay: -0.1s; }
@-webkit-keyframes sk-circleBounceDelay {
0%, 80%, 100% {
-webkit-transform: scale(0);
transform: scale(0);
} 40% {
-webkit-transform: scale(1);
transform: scale(1);
}
}
@keyframes sk-circleBounceDelay {
0%, 80%, 100% {
-webkit-transform: scale(0);
transform: scale(0);
} 40% {
-webkit-transform: scale(1);
transform: scale(1);
}
}
解析：整个加载效果由12个圆心组成，设置不同的旋转让它们呈现圆形环绕，然后设置不同的延迟时间，让它们做缩放运动。
HTML
<div class="sk-cube-grid"> <div class="sk-cube sk-cube1"></div> <div class="sk-cube sk-cube2"></div> <div class="sk-cube sk-cube3"></div> <div class="sk-cube sk-cube4"></div> <div class="sk-cube sk-cube5"></div> <div class="sk-cube sk-cube6"></div> <div class="sk-cube sk-cube7"></div> <div class="sk-cube sk-cube8"></div> <div class="sk-cube sk-cube9"></div> </div>
CSS
.sk-cube-grid {
width: 40px;
height: 40px;
margin: 100px auto;
}
.sk-cube-grid .sk-cube {
width: 33%;
height: 33%;
background-color: #333;
float: left;
-webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
}
.sk-cube-grid .sk-cube1 {
-webkit-animation-delay: 0.2s;
animation-delay: 0.2s; }
.sk-cube-grid .sk-cube2 {
-webkit-animation-delay: 0.3s;
animation-delay: 0.3s; }
.sk-cube-grid .sk-cube3 {
-webkit-animation-delay: 0.4s;
animation-delay: 0.4s; }
.sk-cube-grid .sk-cube4 {
-webkit-animation-delay: 0.1s;
animation-delay: 0.1s; }
.sk-cube-grid .sk-cube5 {
-webkit-animation-delay: 0.2s;
animation-delay: 0.2s; }
.sk-cube-grid .sk-cube6 {
-webkit-animation-delay: 0.3s;
animation-delay: 0.3s; }
.sk-cube-grid .sk-cube7 {
-webkit-animation-delay: 0s;
animation-delay: 0s; }
.sk-cube-grid .sk-cube8 {
-webkit-animation-delay: 0.1s;
animation-delay: 0.1s; }
.sk-cube-grid .sk-cube9 {
-webkit-animation-delay: 0.2s;
animation-delay: 0.2s; }
@-webkit-keyframes sk-cubeGridScaleDelay {
0%, 70%, 100% {
-webkit-transform: scale3D(1, 1, 1);
transform: scale3D(1, 1, 1);
} 35% {
-webkit-transform: scale3D(0, 0, 1);
transform: scale3D(0, 0, 1);
}
}
@keyframes sk-cubeGridScaleDelay {
0%, 70%, 100% {
-webkit-transform: scale3D(1, 1, 1);
transform: scale3D(1, 1, 1);
} 35% {
-webkit-transform: scale3D(0, 0, 1);
transform: scale3D(0, 0, 1);
}
}
解析：九个方块通过 grid布局，形成横向纵向分别三块，设置不同的延迟时间让它们做线性 3D 缩放运动。
HTML
<div class="sk-fading-circle"> <div class="sk-circle1 sk-circle"></div> <div class="sk-circle2 sk-circle"></div> <div class="sk-circle3 sk-circle"></div> <div class="sk-circle4 sk-circle"></div> <div class="sk-circle5 sk-circle"></div> <div class="sk-circle6 sk-circle"></div> <div class="sk-circle7 sk-circle"></div> <div class="sk-circle8 sk-circle"></div> <div class="sk-circle9 sk-circle"></div> <div class="sk-circle10 sk-circle"></div> <div class="sk-circle11 sk-circle"></div> <div class="sk-circle12 sk-circle"></div> </div>
CSS
.sk-fading-circle {
margin: 100px auto;
width: 40px;
height: 40px;
position: relative;
}
.sk-fading-circle .sk-circle {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
}
.sk-fading-circle .sk-circle:before {
content: '';
display: block;
margin: 0 auto;
width: 15%;
height: 15%;
background-color: #333;
border-radius: 100%;
-webkit-animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
}
.sk-fading-circle .sk-circle2 {
-webkit-transform: rotate(30deg);
-ms-transform: rotate(30deg);
transform: rotate(30deg);
}
.sk-fading-circle .sk-circle3 {
-webkit-transform: rotate(60deg);
-ms-transform: rotate(60deg);
transform: rotate(60deg);
}
.sk-fading-circle .sk-circle4 {
-webkit-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg);
}
.sk-fading-circle .sk-circle5 {
-webkit-transform: rotate(120deg);
-ms-transform: rotate(120deg);
transform: rotate(120deg);
}
.sk-fading-circle .sk-circle6 {
-webkit-transform: rotate(150deg);
-ms-transform: rotate(150deg);
transform: rotate(150deg);
}
.sk-fading-circle .sk-circle7 {
-webkit-transform: rotate(180deg);
-ms-transform: rotate(180deg);
transform: rotate(180deg);
}
.sk-fading-circle .sk-circle8 {
-webkit-transform: rotate(210deg);
-ms-transform: rotate(210deg);
transform: rotate(210deg);
}
.sk-fading-circle .sk-circle9 {
-webkit-transform: rotate(240deg);
-ms-transform: rotate(240deg);
transform: rotate(240deg);
}
.sk-fading-circle .sk-circle10 {
-webkit-transform: rotate(270deg);
-ms-transform: rotate(270deg);
transform: rotate(270deg);
}
.sk-fading-circle .sk-circle11 {
-webkit-transform: rotate(300deg);
-ms-transform: rotate(300deg);
transform: rotate(300deg);
}
.sk-fading-circle .sk-circle12 {
-webkit-transform: rotate(330deg);
-ms-transform: rotate(330deg);
transform: rotate(330deg);
}
.sk-fading-circle .sk-circle2:before {
-webkit-animation-delay: -1.1s;
animation-delay: -1.1s;
}
.sk-fading-circle .sk-circle3:before {
-webkit-animation-delay: -1s;
animation-delay: -1s;
}
.sk-fading-circle .sk-circle4:before {
-webkit-animation-delay: -0.9s;
animation-delay: -0.9s;
}
.sk-fading-circle .sk-circle5:before {
-webkit-animation-delay: -0.8s;
animation-delay: -0.8s;
}
.sk-fading-circle .sk-circle6:before {
-webkit-animation-delay: -0.7s;
animation-delay: -0.7s;
}
.sk-fading-circle .sk-circle7:before {
-webkit-animation-delay: -0.6s;
animation-delay: -0.6s;
}
.sk-fading-circle .sk-circle8:before {
-webkit-animation-delay: -0.5s;
animation-delay: -0.5s;
}
.sk-fading-circle .sk-circle9:before {
-webkit-animation-delay: -0.4s;
animation-delay: -0.4s;
}
.sk-fading-circle .sk-circle10:before {
-webkit-animation-delay: -0.3s;
animation-delay: -0.3s;
}
.sk-fading-circle .sk-circle11:before {
-webkit-animation-delay: -0.2s;
animation-delay: -0.2s;
}
.sk-fading-circle .sk-circle12:before {
-webkit-animation-delay: -0.1s;
animation-delay: -0.1s;
}
@-webkit-keyframes sk-circleFadeDelay {
0%, 39%, 100% { opacity: 0; }
40% { opacity: 1; }
}
@keyframes sk-circleFadeDelay {
0%, 39%, 100% { opacity: 0; }
40% { opacity: 1; }
}
解析：加载动画由12个实色圆点360度依次摆开，依次做旋转和透明度的改变。
HTML
<div class="sk-folding-cube"> <div class="sk-cube1 sk-cube"></div> <div class="sk-cube2 sk-cube"></div> <div class="sk-cube4 sk-cube"></div> <div class="sk-cube3 sk-cube"></div> </div>
CSS
.sk-folding-cube {
margin: 20px auto;
width: 40px;
height: 40px;
position: relative;
-webkit-transform: rotateZ(45deg);
transform: rotateZ(45deg);
}
.sk-folding-cube .sk-cube {
float: left;
width: 50%;
height: 50%;
position: relative;
-webkit-transform: scale(1.1);
-ms-transform: scale(1.1);
transform: scale(1.1);
}
.sk-folding-cube .sk-cube:before {
content: '';
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: #333;
-webkit-animation: sk-foldCubeAngle 2.4s infinite linear both;
animation: sk-foldCubeAngle 2.4s infinite linear both;
-webkit-transform-origin: 100% 100%;
-ms-transform-origin: 100% 100%;
transform-origin: 100% 100%;
}
.sk-folding-cube .sk-cube2 {
-webkit-transform: scale(1.1) rotateZ(90deg);
transform: scale(1.1) rotateZ(90deg);
}
.sk-folding-cube .sk-cube3 {
-webkit-transform: scale(1.1) rotateZ(180deg);
transform: scale(1.1) rotateZ(180deg);
}
.sk-folding-cube .sk-cube4 {
-webkit-transform: scale(1.1) rotateZ(270deg);
transform: scale(1.1) rotateZ(270deg);
}
.sk-folding-cube .sk-cube2:before {
-webkit-animation-delay: 0.3s;
animation-delay: 0.3s;
}
.sk-folding-cube .sk-cube3:before {
-webkit-animation-delay: 0.6s;
animation-delay: 0.6s;
}
.sk-folding-cube .sk-cube4:before {
-webkit-animation-delay: 0.9s;
animation-delay: 0.9s;
}
@-webkit-keyframes sk-foldCubeAngle {
0%, 10% {
-webkit-transform: perspective(140px) rotateX(-180deg);
transform: perspective(140px) rotateX(-180deg);
opacity: 0;
} 25%, 75% {
-webkit-transform: perspective(140px) rotateX(0deg);
transform: perspective(140px) rotateX(0deg);
opacity: 1;
} 90%, 100% {
-webkit-transform: perspective(140px) rotateY(180deg);
transform: perspective(140px) rotateY(180deg);
opacity: 0;
}
}
@keyframes sk-foldCubeAngle {
0%, 10% {
-webkit-transform: perspective(140px) rotateX(-180deg);
transform: perspective(140px) rotateX(-180deg);
opacity: 0;
} 25%, 75% {
-webkit-transform: perspective(140px) rotateX(0deg);
transform: perspective(140px) rotateX(0deg);
opacity: 1;
} 90%, 100% {
-webkit-transform: perspective(140px) rotateY(180deg);
transform: perspective(140px) rotateY(180deg);
opacity: 0;
}
}
解析：四个等边方块形成一个正方形，整个旋转45度，然后每个方块通过不同的延迟时间，沿X轴做翻转动画。设置perspective是为了有3D的效果。
结论：以上的这些案例原理都是通过不同的延迟时间，给元素或子元素设置包括X、Y和Z轴上的移动旋转，以及缩放来达到动画的效果。有了这些参考，加上创意还能做出更多的类型加载效果。
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