css实现24种输入框focus点击获取焦点线条背景动画效果代码-html代码-BFW代码库

css实现24种输入框focus点击获取焦点线条背景动画效果代码

代码语言：html

代码描述：css实现24种输入框focus点击获取焦点线条背景动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<html>
<head>
    <style>
        /*= Reset CSS
============= */
        html, body {
            border: 0;
            margin: 0;
            padding: 0;
        }
        body {
            font: 14px "Lato", Arial, sans-serif;
            min-width: 100%;
            min-height: 100%;
            color: #666;
        }
        .container {
            margin: 0 auto;
            max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        .row {
            float: left;
            width: 100%;
            padding: 20px 0 50px;
        }
        h2 {
            text-align: center;
            color: #2079df;
            font-size: 28px;
            float: left;
            width: 100%;
            margin: 30px 0;
            position: relative;
            line-height: 58px;
            font-weight: 400;
        }
        h2:before {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 100px;
            height: 2px;
            background-color: #2079df;
            margin-left: -50px;
        }
        /*= Reset CSS End
================= */
        body {
            background-color: #fff;
        }
        /*= input focus effects css
=========================== */
:focus {
            outline: none;
        }

        .col-3 {
            float: left;
            width: 27.33%;
            margin: 40px 3%;
            position: relative;
        }

        /* necessary to give position: relative to parent. */
        input[type="text"] {
            font: 15px/24px "Lato", Arial, sans-serif;
            color: #333;
            width: 100%;
            box-sizing: border-box;
            letter-spacing: 1px;
        }

        .effect-1,
        .effect-2,
        .effect-3 {
            border: 0;
            padding: 7px 0;
            border-bottom: 1px solid #ccc;
        }

        .effect-1 ~ .focus-border {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #3399FF;
            transition: 0.4s;
        }
        .effect-1:focus ~ .focus-border {
            width: 100%;
            transition: 0.4s;
        }

        .effect-2 ~ .focus-border {
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: #3399FF;
            transition: 0.4s;
        }
        .effect-2:focus ~ .focus-border {
            width: 100%;
            transition: 0.4s;
            left: 0;
        }

        .effect-3 ~ .focus-border {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            z-index: 99;
        }
        .effect-3 ~ .focus-border:before,
        .effect-3 ~ .focus-border:after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 100%;
            background-color: #3399FF;
            transition: 0.4s;
        }
        .effect-3 ~ .focus-border:after {
            left: auto;
            right: 0;
        }
        .effect-3:focus ~ .focus-border:before,
        .effect-3:focus ~ .focus-border:after {
            width.........完整代码请登录后点击上方下载按钮下载查看