Hướng dẫn các bạn cách thêm Hiệu ứng Preload trang cho Blogger, trong lúc chờ tải sẽ hiện hiệu ứng load trang sinh động và đẹp mắt.
Demo trực tiếp ở bài này
.preloader{position:fixed;top:0;left:0;right:0;bottom:0;z-index:100;background:#fff}
.preloader .wrapLoading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);-webkit-transform:translate(-50%,-50%);-ms-transform:translate(-50%,-50%);-o-transform:translate(-50%,-50%)}
.cssload-loader{position:relative;left:calc(50% - 36px);width:72px;height:72px;border-radius:50%;-o-border-radius:50%;-ms-border-radius:50%;-webkit-border-radius:50%;-moz-border-radius:50%;perspective:900px}
.cssload-inner{position:absolute;width:100%;height:100%;box-sizing:border-box;-o-box-sizing:border-box;-ms-box-sizing:border-box;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;border-radius:50%;-o-border-radius:50%;-ms-border-radius:50%;-webkit-border-radius:50%;-moz-border-radius:50%}
.cssload-inner.cssload-one{left:0;top:0;animation:cssload-rotate-one 1.15s linear infinite;-o-animation:cssload-rotate-one 1.15s linear infinite;-ms-animation:cssload-rotate-one 1.15s linear infinite;-webkit-animation:cssload-rotate-one 1.15s linear infinite;-moz-animation:cssload-rotate-one 1.15s linear infinite;border-bottom:3px solid rgba(28,168,49,.98)}
.cssload-inner.cssload-two{right:0;top:0;animation:cssload-rotate-two 1.15s linear infinite;-o-animation:cssload-rotate-two 1.15s linear infinite;-ms-animation:cssload-rotate-two 1.15s linear infinite;-webkit-animation:cssload-rotate-two 1.15s linear infinite;-moz-animation:cssload-rotate-two 1.15s linear infinite;border-right:3px solid #e01631}
.cssload-inner.cssload-three{right:0;bottom:0;animation:cssload-rotate-three 1.15s linear infinite;-o-animation:cssload-rotate-three 1.15s linear infinite;-ms-animation:cssload-rotate-three 1.15s linear infinite;-webkit-animation:cssload-rotate-three 1.15s linear infinite;-moz-animation:cssload-rotate-three 1.15s linear infinite;border-top:3px solid #3d36f7}
@keyframes cssload-rotate-one{0%{transform:rotateX(35deg) rotateY(-45deg) rotateZ(0)}100%{transform:rotateX(35deg) rotateY(-45deg) rotateZ(360deg)}}
@-o-keyframes cssload-rotate-one{0%{-o-transform:rotateX(35deg) rotateY(-45deg) rotateZ(0)}100%{-o-transform:rotateX(35deg) rotateY(-45deg) rotateZ(360deg)}}
@-ms-keyframes cssload-rotate-one{0%{-ms-transform:rotateX(35deg) rotateY(-45deg) rotateZ(0)}100%{-ms-transform:rotateX(35deg) rotateY(-45deg) rotateZ(360deg)}}
@-webkit-keyframes cssload-rotate-one{0%{-webkit-transform:rotateX(35deg) rotateY(-45deg) rotateZ(0)}100%{-webkit-transform:rotateX(35deg) rotateY(-45deg) rotateZ(360deg)}}
@-moz-keyframes cssload-rotate-one{0%{-moz-transform:rotateX(35deg) rotateY(-45deg) rotateZ(0)}100%{-moz-transform:rotateX(35deg) rotateY(-45deg) rotateZ(360deg)}}
@keyframes cssload-rotate-two{0%{transform:rotateX(50deg) rotateY(10deg) rotateZ(0)}100%{transform:rotateX(50deg) rotateY(10deg) rotateZ(360deg)}}
@-o-keyframes cssload-rotate-two{0%{-o-transform:rotateX(50deg) rotateY(10deg) rotateZ(0)}100%{-o-transform:rotateX(50deg) rotateY(10deg) rotateZ(360deg)}}
@-ms-keyframes cssload-rotate-two{0%{-ms-transform:rotateX(50deg) rotateY(10deg) rotateZ(0)}100%{-ms-transform:rotateX(50deg) rotateY(10deg) rotateZ(360deg)}}
@-webkit-keyframes cssload-rotate-two{0%{-webkit-transform:rotateX(50deg) rotateY(10deg) rotateZ(0)}100%{-webkit-transform:rotateX(50deg) rotateY(10deg) rotateZ(360deg)}}
@-moz-keyframes cssload-rotate-two{0%{-moz-transform:rotateX(50deg) rotateY(10deg) rotateZ(0)}100%{-moz-transform:rotateX(50deg) rotateY(10deg) rotateZ(360deg)}}
@keyframes cssload-rotate-three{0%{transform:rotateX(35deg) rotateY(55deg) rotateZ(0)}100%{transform:rotateX(35deg) rotateY(55deg) rotateZ(360deg)}}
@-o-keyframes cssload-rotate-three{0%{-o-transform:rotateX(35deg) rotateY(55deg) rotateZ(0)}100%{-o-transform:rotateX(35deg) rotateY(55deg) rotateZ(360deg)}}
@-ms-keyframes cssload-rotate-three{0%{-ms-transform:rotateX(35deg) rotateY(55deg) rotateZ(0)}100%{-ms-transform:rotateX(35deg) rotateY(55deg) rotateZ(360deg)}}
@-webkit-keyframes cssload-rotate-three{0%{-webkit-transform:rotateX(35deg) rotateY(55deg) rotateZ(0)}100%{-webkit-transform:rotateX(35deg) rotateY(55deg) rotateZ(360deg)}}
@-moz-keyframes cssload-rotate-three{0%{-moz-transform:rotateX(35deg) rotateY(55deg) rotateZ(0)}100%{-moz-transform:rotateX(35deg) rotateY(55deg) rotateZ(360deg)}}
Bước 2: Thêm HTML dưới thẻ <body>
<div class="preloader">
<div class="wrapLoading">
<div class="cssload-loader">
<div class="cssload-inner cssload-one"></div>
<div class="cssload-inner cssload-two"></div>
<div class="cssload-inner cssload-three"></div>
</div>
</div>
</div>
Bước 3: Thêm JavaScript trước thẻ đóng </body>
<script>$(window).bind("load", function() {$('.preloader').delay(1000).fadeOut(500);})</script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js'></script>