欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识！
您现在的位置是： 首页  >  IT编程

Adaptive Placeholders

程序员文章站 2022-06-25 08:21:52
https://wisdmlabs.com/blog/create-adaptive-placeholders-using-css/ https://circleci.com/blog/adaptive-placeholders/ https://*.com/question ......

https://wisdmlabs.com/blog/create-adaptive-placeholders-using-css/

https://circleci.com/blog/adaptive-placeholders/

https://*.com/questions/47983822/css-operator-adaptive-placeholder-contact-form-7-wordpress

<!doctype html>
<html lang="zh-cn">
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>adaptive placeholder – 自适应的占位符效果</title> 
    
    <style type="text/css">
    
    body {
    background-color: #fafafa;
}
.top-banner {
  background: #555;
}
input[type=text] {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  width: 100%;
  height: -webkit-calc(3em + 2px);
  height: calc(3em + 2px);
  margin: 0 0 1em;
  padding: 1em;
  border: 1px solid #cccccc;
  border-radius: 1.5em;
  background: #fff;
  resize: none;
  outline: none;
}
input[type=text][required]:focus {
  border-color: #00bafa;
}
input[type=text][required]:focus + label[placeholder]:before {
  color: #00bafa;
}
input[type=text][required]:focus + label[placeholder]:before, input[type=text][required]:valid + label[placeholder]:before {
  -webkit-transition-duration: .2s;
  transition-duration: .2s;
  -webkit-transform: translate(0, -1.5em) scale(0.9, 0.9);
  -ms-transform: translate(0, -1.5em) scale(0.9, 0.9);
  transform: translate(0, -1.5em) scale(0.9, 0.9);
}
input[type=text][required]:invalid + label[placeholder][alt]:before {
  content: attr(alt);
}
input[type=text][required] + label[placeholder] {
  display: block;
  pointer-events: none;
  line-height: 2.3em;
  margin-top: -webkit-calc(-3em - 2px);
  margin-top: calc(-3em - 2px);
  margin-bottom: -webkit-calc((3em - 1em) + 2px);
  margin-bottom: calc((3em - 1em) + 2px);
}
input[type=text][required] + label[placeholder]:before {
  content: attr(placeholder);
  display: inline-block;
  margin: 0 -webkit-calc(1em + 2px);
  margin: 0 calc(1em + 2px);
  padding: 0 2px;
  color: #898989;
  white-space: nowrap;
  -webkit-transition: 0.3s ease-in-out;
  transition: 0.3s ease-in-out;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#ffffff), to(#ffffff));
  background-image: -webkit-linear-gradient(top, #ffffff, #ffffff);
  background-image: linear-gradient(to bottom, #ffffff, #ffffff);
  -webkit-background-size: 100% 5px;
  background-size: 100% 5px;
  background-repeat: no-repeat;
  background-position: center;
}
    
    *, *:after, *:before { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }
.clearfix:after{visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0}
.clearfix{*zoom:1}
.fl{float:left}
.fr{float:right}
.fl,.fr{_display:inline}
.top-banner {
	position:absolute;
	z-index: 999;
	left:0;
	top:0;
	height:40px;
	line-height:40px;
	padding:0 30px;
	width:100%;
	font-size: 13px;
	background-color: rgba(255, 255, 255, 0.15);
	color: #fff;
	font-family: "宋体","microsoft yahei","helvetica neue",helvetica,arial,sans-serif;
	font-size: 15px;
	/*text-shadow: 1px 1px 3px #333;*/
	/*box-shadow: 0 1px 0 #999;*/
}
.top-banner a {
	color: #fff;
	text-decoration: none;
}
    </style>
   <script type="text/javascript">
$(function() {
    $("input[id$=address]").qtip({
        content: '涂聚文告诉你，好样的'
    });
});
</script>

</head>

<body>
    <div style="width:400px;height:100px;margin:300px auto">
        <form>
            <input required='必须填写' type='text' class="name" id="name">
            <label alt='请输入姓名' placeholder='姓名'></label>
            <input required='必须填写' type='text' class="address" id="address">
            <label alt='请输入地址' placeholder='地址'></label>

        </form>
    </div>
<div class="footer-banner" style="width:728px; margin:200px auto 0"></div>
<script src="js/jquery.min.js"></script>
</body>
</html>

　　Adaptive Placeholders

上一篇： redis 系列23 哨兵Sentinel (上)

下一篇： Mysql多主一从数据备份的方法教程

推荐阅读