js+jQuery弹性滑动动画进度条特效

书写css代码。.codrops-demos { margin: 2em 0 0; }.codrops-demos a { display: inline-block; margin: 0 0.5em; }.codrops-demos a.current-demo { color: #333; }/* Content */.content { padding: 3em 0; }.row { display: -we    bkit-flex; display: flex; -we    bkit-flex-direction: row; flex-direction: row; padding: 0 2em; }.box { width: 50%; border: 10px solid #f9f9f9; background: #fff; display: -we    bkit-flex; display: flex; -we    bkit-justify-content: center; justify-content: center; -we    bkit-align-items: center; align-items: center; }.box:last-child { background: #E8EBEC; -we    bkit-justify-content: flex-start; justify-content: flex-start; }.box--centered { text-align: center; }pre { padding: 0 2em; margin: 0; color: #436843; tab-size: 2; font-family: 'Inconsolata', monospace; line-height: 1.5; font-weight: bold; font-size: 0.85em; }/* Download button style */.Download { display: inline-block; width: 300px; height: 120px; }/* Top Navigation Style */.htmleaf-links { position: relative; display: inline-block; white-space: nowrap; font-size: 1.5em; text-align: center; }.htmleaf-links::after { position: absolute; top: 0; left: 50%; margin-left: -1px; width: 2px; height: 100%; background: #dbdbdb; content: ''; -we    bkit-transform: rotate3d(0, 0, 1, 22.5deg); transform: rotate3d(0, 0, 1, 22.5deg); }.htmleaf-icon { display: inline-block; margin: 0.5em; padding: 0em 0; width: 1.5em; text-decoration: none; }.htmleaf-icon span { display: none; }.htmleaf-icon:before { margin: 0 5px; text-transform: none; font-weight: normal; font-style: normal; font-variant: normal; font-family: 'icomoon'; line-height: 1; speak: none; -we    bkit-font-smoothing: antialiased; }

书写并添加js代码。

代码整体结构。

查看效果。