CSS3折角代码效果

2024-09-05 12:18:50

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基于CSS3的Div折角效果，运行效果后，你可看到一个Div的二个对象对折起来了，你是纸张折角了一样，看似简单的一个效果，但为了不使用图片，选择用CSS3来实现，不过代码整体还是挺多的。

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>CSS3 Paper-CSS3折角效果</title><style>@import url(http://fonts.googleapis.com/css?family=Oswald:400,300);div {  width: 200px;  height: 200px;  padding: 10px;  border: 1px solid #ddd;  background-size: cover;background-clip: content-box;  background-color: #f66f6f;  box-sizing: border-box;  position: relative;  margin: auto;  top: 30px;   font: 400 2em/180px 'Oswald', sans-serif;  color: #fbfbfb;  text-indent: 20px;}div:after {  content: "";  display: block;  position: absolute;  border: 50px solid transparent;  border-bottom: 50px solid #fefefe;  bottom: -60px;  right: -65px;  box-shadow: 0px 7px 6px -9px black;  transform: rotate(135deg);}div:before {  content: "";  display: block;  position: absolute;  border: 50px solid transparent;  border-top: 50px solid #fefefe;  top: -60px;  left: -65px;  box-shadow: 0px -7px 6px -9px black;  transform: rotate(135deg);}</style><script>    window.confirm = function(){};    window.prompt  = function(){};    window.open    = function(){};    window.print   = function(){};    // Support hover state for mobile.    if (false) {      window.ontouchstart = function(){};    }  </script><script>(function(){if(!window.addEventListener) {  return;}var self = window.StyleFix = {  link: function(link) {    try {      if(link.rel !== 'stylesheet' || link.hasAttribute('data-noprefix')) {        return;      }    }    catch(e) {      return;    }    var url = link.href || link.getAttribute('data-href'),        base = url.replace(/[^//]+$/, ''),        base_scheme = (/^[a-z]{3,10}:/.exec(base) || [''])[0],        base_domain = (/^[a-z]{3,10}:////[^//]+/.exec(base) || [''])[0],        base_query = /^([^?]*)/??/.exec(url)[1],        parent = link.parentNode,        xhr = new XMLHttpRequest(),        process;    xhr.onreadystatechange = function() {      if(xhr.readyState === 4) {        process();      }    };    process = function() {        var css = xhr.responseText;        if(css && link.parentNode && (!xhr.status || xhr.status < 400 || xhr.status > 600)) {          css = self.fix(css, true, link);          if(base) {            css = css.replace(/url/(/s*?((?:"|')?)(.+?)/1/s*?/)/gi, function($0, quote, url) {              if(/^([a-z]{3,10}:|#)/i.test(url)) { // Absolute & or hash-relative                return $0;              }              else if(/^/////.test(url)) { // Scheme-relative                return 'url("' + base_scheme + url + '")';              }              else if(/^///.test(url)) { // Domain-relative                return 'url("' + base_domain + url + '")';              }              else if(/^/?/.test(url)) { // Query-relative                return 'url("' + base_query + url + '")';              }              else {               return 'url("' + base + url + '")';              }            });            var escaped_base = base.replace(/([///^/$*+[/]?{}.=!:(|)])/g,"//$1");            css = css.replace(RegExp('//b(behavior://s*?url//(/'?"?)' + escaped_base, 'gi'), '$1');            }          var style = document.createElement('style');          style.textContent = css;          style.media = link.media;          style.disabled = link.disabled;          style.setAttribute('data-href', link.getAttribute('href'));          parent.insertBefore(style, link);          parent.removeChild(link);          style.media = link.media; // Duplicate is intentional. 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'(' + selectors[selector] + ')' : '');  if(!supported(test) && supported(self.prefixSelector(test))) {    self.selectors.push(selector);  }}for(var atrule in atrules) {  var test = atrule + ' ' + (atrules[atrule] || '');  if(!supported('@' + test) && supported('@' + self.prefix + test)) {    self.atrules.push(atrule);  }}root.removeChild(style);})();self.valueProperties = [  'transition',  'transition-property']root.className += ' ' + self.prefix;StyleFix.register(self.prefixCSS);})(document.documentElement);</script></head><body><div>	Be cool.</div><script></script><script>    if (document.location.search.match(/type=embed/gi)) {      window.parent.postMessage('resize', "*");    }  </script></body></html>

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