Preloader для сайта — стиль 58

Подробное описание и демонстрацией работы эффекта загрузки под номером №58 для бибилиотеки Bootstrap. Html и CSS код для реализации preloader’a сайта как на изображении.

html разметка для реализации эффекта загрузки тсраницы

<div class="demo">
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="loader">
<span class="box box-1"></span>
<span class="box box-2"></span>
<span class="box box-3"></span>
<span class="box box-4"></span>
</div>
</div>
</div>
</div>
</div>

css разметка для реализации эффекта загрузки тсраницы

.demo{ background: #4f4f4f; }
.loader{
width: 30px;
height: 30px;
margin: 60px auto;
position: relative;
-webkit-animation: main-loading 2.5s linear 0.125s infinite normal;
animation: main-loading 2.5s linear 0.125s infinite normal;
}
.loader .box{
width: 12px;
height: 12px;
border-radius: 50%;
display: inline-block;
position: absolute;
background: #f88827;
}
.loader .box-1{
top: 0;
left: 0;
-webkit-animation: loading1 0.3125s linear 0s infinite alternate;
animation: loading1 0.3125s linear 0s infinite alternate;
}
.loader .box-2{
top: 0;
right: 0;
background: #f1f1f1;
-webkit-animation: loading2 0.3125s linear 0s infinite alternate;
animation: loading2 0.3125s linear 0s infinite alternate;
}
.loader .box-3{
bottom: 0;
left: 0;
background: #f1f1f1;
-webkit-animation: loading3 0.3125s linear 0s infinite alternate;
animation: loading3 0.3125s linear 0s infinite alternate;
}
.loader .box-4{
bottom: 0;
right: 0;
-webkit-animation: loading4 0.3125s linear 0s infinite alternate;
animation: loading4 0.3125s linear 0s infinite alternate;
}
@-webkit-keyframes main-loading{
0% {
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
}
15% {
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
25% {
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
40% {
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
50% {
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
65% {
-webkit-transform: rotate(270deg);
transform: rotate(270deg);
}
75% {
-webkit-transform: rotate(270deg);
transform: rotate(270deg);
}
90% {
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
}
100% {
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
}
}
@keyframes main-loading{
0% {
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
}
15% {
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
25% {
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
40% {
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
50% {
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
65% {
-webkit-transform: rotate(270deg);
transform: rotate(270deg);
}
75% {
-webkit-transform: rotate(270deg);
transform: rotate(270deg);
}
90% {
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
}
100% {
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
}
}
@-webkit-keyframes loading1{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(25%, 25%, 0);
transform: translate3d(25%, 25%, 0);
}
}
@keyframes loading1{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(25%, 25%, 0);
transform: translate3d(25%, 25%, 0);
}
}
@-webkit-keyframes loading2{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(-25%, 25%, 0);
transform: translate3d(-25%, 25%, 0);
}
}
@keyframes loading2{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(-25%, 25%, 0);
transform: translate3d(-25%, 25%, 0);
}
}
@-webkit-keyframes loading3{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(25%, -25%, 0);
transform: translate3d(25%, -25%, 0);
}
}
@keyframes loading3{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(25%, -25%, 0);
transform: translate3d(25%, -25%, 0);
}
}
@-webkit-keyframes loading4{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(-25%, -25%, 0);
transform: translate3d(-25%, -25%, 0);
}
}
@keyframes loading4{
0% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
40% {
-webkit-transform: translate3d(0%, 0%, 0);
transform: translate3d(0%, 0%, 0);
}
100% {
-webkit-transform: translate3d(-25%, -25%, 0);
transform: translate3d(-25%, -25%, 0);
}
}

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