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我在将本教程更改为可用于我想要完成的任务时遇到问题。http://thecodeplayer.com/walkthrough/pure-css3-animated-clouds-background

我想把云变成气泡，让它从下到上而不是从左到右。

虽然它对背景做了一些非常奇怪的事情......谁能帮我查明为什么它会随着气泡移动 BG 渐变我只希望它移动气泡并让我的 BG 静止

这是我的 CSS

            body {
                /*To hide the horizontal scroller appearing during the animation*/
                overflow: hidden;
                background-image: linear-gradient(bottom, #14C3F4 21%, #FCFCFC 90%);
            background-image: -o-linear-gradient(bottom, #14C3F4 21%, #FCFCFC 90%);
            background-image: -moz-linear-gradient(bottom, #14C3F4 21%, #FCFCFC 90%);
            background-image: -webkit-linear-gradient(bottom, #14C3F4 21%, #FCFCFC 90%);
            background-image: -ms-linear-gradient(bottom, #14C3F4 21%, #FCFCFC 90%);

            background-image: -webkit-gradient(
              linear,
              left bottom,
              left top,
              color-stop(0.21, #14C3F4),
              color-stop(0.9, #FCFCFC));
            }

            #clouds{
                padding: 100px 0;
            /*  background: #c9dbe9;
                background: -webkit-linear-gradient(top, #c9dbe9 0%, #fff 100%);
                background: -linear-gradient(top, #c9dbe9 0%, #fff 100%);
                background: -moz-linear-gradient(top, #c9dbe9 0%, #fff 100%);*/
            }

            /*Time to finalise the cloud shape*/
            .cloud {
                width: 60px; height: 60px;
                background: #fff;

                border-radius: 200px;
                -moz-border-radius: 200px;
                -webkit-border-radius: 200px;

                position: relative; 
            }



            /*Time to animate*/
            .x1 {
                -webkit-animation: moveclouds 15s linear infinite;
                -moz-animation: moveclouds 15s linear infinite;
                -o-animation: moveclouds 15s linear infinite;
            }

            /*variable speed, opacity, and position of clouds for realistic effect*/
            .x2 {
                left: 200px;

                -webkit-transform: scale(0.6);
                -moz-transform: scale(0.6);
                transform: scale(0.6);
                opacity: 0.6; /*opacity proportional to the size*/

                /*Speed will also be proportional to the size and opacity*/
                /*More the speed. Less the time in 's' = seconds*/
                -webkit-animation: moveclouds 25s linear infinite;
                -moz-animation: moveclouds 25s linear infinite;
                -o-animation: moveclouds 25s linear infinite;
            }

            .x3 {
                left: 350px; 

                -webkit-transform: scale(0.8);
                -moz-transform: scale(0.8);
                transform: scale(0.8);
                opacity: 0.8; /*opacity proportional to the size*/

                -webkit-animation: moveclouds 20s linear infinite;
                -moz-animation: moveclouds 20s linear infinite;
                -o-animation: moveclouds 20s linear infinite;
            }

            .x4 {
                left: 470px; 

                -webkit-transform: scale(0.75);
                -moz-transform: scale(0.75);
                transform: scale(0.75);
                opacity: 0.75; /*opacity proportional to the size*/

                -webkit-animation: moveclouds 18s linear infinite;
                -moz-animation: moveclouds 18s linear infinite;
                -o-animation: moveclouds 18s linear infinite;
            }

            .x5 {
                left: 150px; 

                -webkit-transform: scale(0.8);
                -moz-transform: scale(0.8);
                transform: scale(0.8);
                opacity: 0.8; /*opacity proportional to the size*/

                -webkit-animation: moveclouds 20s linear infinite;
                -moz-animation: moveclouds 20s linear infinite;
                -o-animation: moveclouds 20s linear infinite;
            }

            @-webkit-keyframes moveclouds {
                0% {margin-bottom: 1000px;}
                100% {margin-bottom: -1000px;}
            }
            @-moz-keyframes moveclouds {
                0% {margin-bottom: 1000px;}
                100% {margin-bottom: -1000px;}
            }
            @-o-keyframes moveclouds {
                0% {margin-bottom: 1000px;}
                100% {margin-bottom: -1000px;}
            }

还有我的 HTML

            <div id="clouds">
                <div class="cloud x1"></div>
                <!-- Time for multiple clouds to dance around -->
                <div class="cloud x2"></div>
                <div class="cloud x3"></div>
                <div class="cloud x4"></div>
                <div class="cloud x5"></div>
            </div>
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1 回答 1

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随着气泡向上移动，#clouds 正在崩溃。这使锁链中的身体坍塌。这导致背景重复，因此出现了奇怪的背景错误。

为 html、body 和 #clouds 添加 100% 高度可解决问题

这是一个演示：http: //jsfiddle.net/Fmy7F/1/

于 2012-07-26T04:39:43.607 回答