CSS3打造磨砂玻璃背景效果

简介

这个效果是在看CSS Secrets这书上看到的,感觉很不错;

实现原理也挺简单的;

效果图及实现

效果图

代码实现

CSS Code 复制内容到剪贴板

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        "UTF-8">
        Document
           </span></li> 
    <li class="alt"><span>                    </span><span class="comment">/** </span> </li> 
    <li><span><span class="comment">                     * 设置背景图全屏覆盖及固定 </span> </span></li> 
    <li class="alt"><span><span class="comment">                     * 设置内部元素偏移 </span> </span></li> 
    <li><span><span class="comment">                     */</span><span>  </span></span></li> 
    <li class="alt"><span>                    body {   </span></li> 
    <li><span>                        </span><span class="comment">/*此处背景图自行替换*/</span><span>  </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">background</span><span>: </span><span class="string">url</span><span>(demo.jpg) </span><span class="string">no-repeat</span><span> </span><span class="string">center</span><span> </span><span class="string">center</span><span> </span><span class="string">fixed</span><span>;   </span></li> 
    <li><span>                        </span><span class="keyword">background</span><span>-</span><span class="keyword">size</span><span>: cover;   </span></li> 
    <li class="alt"><span>                         </span><span class="keyword">min-height</span><span>: 100vh;   </span></li> 
    <li><span>                        box-sizing: </span><span class="keyword">border</span><span>-box;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">margin</span><span>: 0;   </span></li> 
    <li><span>                        </span><span class="keyword">padding-top</span><span>: calc(50vh - 6em);   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">font</span><span>: 150%/1.6 Baskerville, Palatino, </span><span class="string">serif</span><span>;   </span></li> 
    <li><span>                    }   </span></li> 
    <li class="alt"><span>  </span></li> 
    <li><span>                    </span><span class="comment">/** </span> </li> 
    <li class="alt"><span><span class="comment">                     * 整体居中功能； </span> </span></li> 
    <li><span><span class="comment">                     * 背景透明虚化 </span> </span></li> 
    <li class="alt"><span><span class="comment">                     * 溢出隐藏 </span> </span></li> 
    <li><span><span class="comment">                     * 边缘圆角化 </span> </span></li> 
    <li class="alt"><span><span class="comment">                     * 文字增加淡阴影 </span> </span></li> 
    <li><span><span class="comment">                     */</span><span>  </span></span></li> 
    <li class="alt"><span>                    .description{   </span></li> 
    <li><span>                        </span><span class="keyword">position</span><span>: </span><span class="string">relative</span><span>;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">margin</span><span>: 0 </span><span class="string">auto</span><span>;   </span></li> 
    <li><span>                        </span><span class="keyword">padding</span><span>: 1em;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">max-width</span><span>: 23em;   </span></li> 
    <li><span>                        </span><span class="keyword">background</span><span>: hsla(0,0%,100%,.25) </span><span class="keyword">border</span><span>-box;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">overflow</span><span>: </span><span class="string">hidden</span><span>;   </span></li> 
    <li><span>                        </span><span class="keyword">border</span><span>-radius: .3em;   </span></li> 
    <li class="alt"><span>                        box-shadow: 0 0 0 </span><span class="string">1px</span><span> hsla(0,0%,100%,.3) </span><span class="string">inset</span><span>,   </span></li> 
    <li><span>                                    0 .5em 1em rgba(0, 0, 0, 0.6);   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">text-shadow</span><span>: 0 </span><span class="string">1px</span><span> </span><span class="string">1px</span><span> hsla(0,0%,100%,.3);   </span></li> 
    <li><span>                    }   </span></li> 
    <li class="alt"><span>  </span></li> 
    <li><span>                    </span><span class="comment">/*使用滤镜模糊边缘*/</span><span>  </span></li> 
    <li class="alt"><span>                    .description::before{   </span></li> 
    <li><span>                        </span><span class="keyword">content</span><span>: </span><span class="string">''</span><span>;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">position</span><span>: </span><span class="string">absolute</span><span>;   </span></li> 
    <li><span>                        </span><span class="string">top</span><span>: 0; </span><span class="keyword">right</span><span class="string">right</span><span>: 0; </span><span class="keyword">bottom</span><span class="string">bottom</span><span>: 0; </span><span class="string">left</span><span>: 0;   </span></li> 
    <li class="alt"><span>                        </span><span class="keyword">margin</span><span>: -</span><span class="string">30px</span><span>;   </span></li> 
    <li><span>                        </span><span class="keyword">z-index</span><span>: -1;   </span></li> 
    <li class="alt"><span>                        -webkit-filter: blur(</span><span class="string">20px</span><span>);   </span></li> 
    <li><span>                        filter: blur(</span><span class="string">20px</span><span>);   </span></li> 
    <li class="alt"><span>                    }   </span></li> 
    <li><span>


        "description">
        Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
        tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
        quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
        consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
        cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
        proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

总结

这种实现模式是考虑了性能来写的,以及维护上的考虑
- 比如使用了em,可以很轻松的放大缩小整体大小
- 这里使用了hsla,这是我第一次使用这个颜色值;以前只在ps调整这个,很不错的颜色模式.和RGBA大同小异,但是HSLA更符合人类眼睛的观看;
- 还学到了一种新的背景缩写方式

CSS Code 复制内容到剪贴板

/*分开写*/
background-color:#ff0;
background-image:url(background.gif);
background-repeat:no-repeat;
background-attachment:fixed;
background-position:0 0;
background-size:cover;

/*简写*/
background: #ff0 url(background.gif) no-repeat / fixed cover;
/*设置background-size必须用单斜杠隔开*/

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。