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#Codevember - Day 6 - Bookshelf loader
<div class="bookshelf_wrapper">
<ul class="books_list">
<li class="book_item first"></li>
<li class="book_item second"></li>
<li class="book_item third"></li>
<li class="book_item fourth"></li>
<li class="book_item fifth"></li>
<li class="book_item sixth"></li>
</ul>
<div class="shelf"></div>
</div>
$thickness : 5px;
$duration : 2500;
$delay : $duration/6;
@mixin polka($size, $dot, $base, $accent){
background: $base;
background-image: radial-gradient($accent $dot, transparent 0);
background-size:$size $size;
background-position: 0 -2.5px;
}
body {
background-color: #1e6cc7;
width: 100%;
height: 100vh;
margin: 0;
}
.bookshelf_wrapper {
position: relative;
top: 60%;
left: 50%;
transform: translate(-50%, -50%);
}
.books_list {
margin: 0 auto;
width: 300px;
padding: 0;
}
.book_item {
position: absolute;
top: -120px;
box-sizing: border-box;
list-style: none;
width: 40px;
height: 120px;
opacity: 0;
background-color: #1e6cc7;
border: $thickness solid white;
transform-origin: bottom left;
transform: translateX(300px);
animation: travel #{$duration}ms linear infinite;
&.first {
top: -140px;
height: 140px;
&:before,
&:after {
content:'';
position: absolute;
top: 10px;
left: 0;
width: 100%;
height: $thickness;
background-color: white;
}
&:after {
top: initial;
bottom: 10px;
}
}
&.second,
&.fifth {
&:before,
&:after {
box-sizing: border-box;
content:'';
position: absolute;
top: 10px;
left: 0;
width: 100%;
height: $thickness*3.5;
border-top: $thickness solid white;
border-bottom: $thickness solid white;
}
&:after {
top: initial;
bottom: 10px;
}
}
&.third {
&:before,
&:after {
box-sizing: border-box;
content:'';
position: absolute;
top: 10px;
left: 9px;
width: 12px;
height: 12px;
border-radius: 50%;
border: $thickness solid white;
}
&:after {
top: initial;
bottom: 10px;
}
}
&.fourth {
top: -130px;
height: 130px;
&:before {
box-sizing: border-box;
content:'';
position: absolute;
top: 46px;
left: 0;
width: 100%;
height: $thickness*3.5;
border-top: $thickness solid white;
border-bottom: $thickness solid white;
}
}
&.fifth {
top: -100px;
height: 100px;
}
&.sixth {
top: -140px;
height: 140px;
&:before {
box-sizing: border-box;
content:'';
position: absolute;
bottom: 31px;
left: 0px;
width: 100%;
height: $thickness;
background-color: white;
}
&:after {
box-sizing: border-box;
content:'';
position: absolute;
bottom: 10px;
left: 9px;
width: 12px;
height: 12px;
border-radius: 50%;
border: $thickness solid white;
}
}
&:nth-child(2) {
animation-delay: #{$delay*1}ms;
}
&:nth-child(3) {
animation-delay: #{$delay*2}ms;
}
&:nth-child(4) {
animation-delay: #{$delay*3}ms;
}
&:nth-child(5) {
animation-delay: #{$delay*4}ms;
}
&:nth-child(6) {
animation-delay: #{$delay*5}ms;
}
}
.shelf {
width: 300px;
height: $thickness;
margin: 0 auto;
background-color: white;
position: relative;
&:before,
&:after {
content:'';
position : absolute;
width: 100%;
height: 100%;
@include polka(10px, 30%, #1e6cc7, rgba(255,255,255,0.5));
top: 200%;
left: 5%;
animation: move #{$duration/10}ms linear infinite;
}
&:after {
top: 400%;
left: 7.5%;
}
}
@keyframes move {
from {
background-position-x: 0;
}
to {
background-position-x: 10px;
}
}
@keyframes travel {
0% {
opacity: 0;
transform: translateX(300px) rotateZ(0deg) scaleY(1);
}
6.5% {
transform: translateX(279.5px) rotateZ(0deg) scaleY(1.1);
}
8.8% {
transform: translateX(273.6px) rotateZ(0deg) scaleY(1);
}
10% {
opacity: 1;
transform: translateX(270px) rotateZ(0deg);
}
17.6% {
transform: translateX(247.2px) rotateZ(-30deg);
}
45% {
transform: translateX(165px) rotateZ(-30deg);
}
49.5% {
transform: translateX(151.5px) rotateZ(-45deg);
}
61.5% {
transform: translateX(115.5px) rotateZ(-45deg);
}
67% {
transform: translateX(99px) rotateZ(-60deg);
}
76% {
transform: translateX(72px) rotateZ(-60deg);
}
83.5% {
opacity: 1;
transform: translateX(49.5px) rotateZ(-90deg);
}
90% {
opacity: 0;
}
100% {
opacity: 0;
transform: translateX(0px) rotateZ(-90deg);
}
}
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