CSS3之边框应用

效果如图：

 

代码示例如下：

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <style type="text/css">
        body,html{
            padding: 0;
            margin: 0;
            background: #F7F7F7;
        }
        .items{
            width: 1260px;
            height: 260px;
            margin: 100px auto;
        }
        img{
            display: block;
        }
        .item{
            width: 224px;
            height: auto;
            float: left;
            margin: 3px 13px;
            cursor: pointer;
            position: relative;
        }
        /*:after 选择器在被选元素的内容后面插入内容。*/
        .item:before{
            content: attr(data-text);
            text-align: center;
            line-height: 350px;
            color: #fff;
            display: block;
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0;
            left: 0;
            background-color: rgba(170, 170, 170, 0);
            z-index: -1;
            transition: all 0.3s ease-in;
        }
        .item:hover:before{
            background-color: rgba(170, 170, 170, 0.6);
            z-index: 100;
        }
        .item .topp{
            height: 112px;
            position: relative;
        }
        .item .topp>img{
            width: 224px;
            height: 112px;
        }
        .topp .logo{
            position: absolute;
            width: 80px;
            height: 80px;
            bottom: -44px;
            left: 50%;
            margin-left: -44px;
            border-radius: 50px;
            overflow: hidden;
            border: 4px solid #fff;
        }
        .item .under{
            height: 140px;
            background: #fff;
        }
        /* .items .item:hover{
            background: RGBA(170,170,170,0.6);
            border:1px solid red;
            z-index: 999;
            
        } */
    </style>
</head>
<body>
    <div class="items">

        <div class="item" data-text="一束鲜花">
            <div class="topp">
            <img src="images/item_1.jpg">
            <a href="javascript:;" class="logo"><img src="images/logo_1.jpg"> </a>
            </div><!--topp结束-->
            <div class="under">
            </div><!--under结束-->
        </div><!--item结束-->

        <div class="item" data-text="猫头">
            <div class="topp">
            <img src="images/item_2.jpg">
            <a href="javascript:;" class="logo"><img src="images/logo_2.jpg"> </a>
            </div><!--topp结束-->
            <div class="under">
            </div><!--under结束-->
        </div><!--item结束-->

        <div class="item" data-text="女人">
            <div class="topp">
            <img src="images/item_3.jpg">
            <a href="javascript:;" class="logo"><img src="images/logo_3.jpg"> </a>
            </div><!--topp结束-->
            <div class="under">
            </div><!--under结束-->
        </div><!--item结束-->

        <div class="item" data-text="小孩">
            <div class="topp">
            <img src="images/item_4.jpg">
            <a href="javascript:;" class="logo"><img src="images/logo_4.jpg"> </a>
            </div><!--topp结束-->
            <div class="under">
            </div><!--under结束-->
        </div><!--item结束-->

        <div class="item" data-text="猫头">
            <div class="topp">
            <img src="images/item_5.jpg">
            <a href="javascript:;" class="logo"><img src="images/logo_5.jpg"> </a>
            </div><!--topp结束-->
            <div class="under">
            </div><!--under结束-->
        </div><!--item结束-->
    </div><!--items结束-->
</body>
</html>

注意：用鼠标覆盖时出现的暗光效果，需要用到:after选择器，把背景色换成暗光显示的颜色，并把透明度换成0，让其他的元素吧它给覆盖(z-index=-1)

 

posted @ 2018-02-27 15:50  乖乖乖码  阅读(185)  评论(0)  编辑  收藏  举报