一款纯css实现的垂直时间线效果

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        <header class="clearfix">
            <span>Blueprint <span class="bp-icon bp-icon-about" data-content="The Blueprints are a collection of basic and minimal website concepts, components, plugins and layouts with minimal style for easy adaption and usage, or simply for inspiration.">
            </span></span>
            <h1>
                Vertical Timeline</h1>
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                    data-info="Blueprints archive"><span>Go to the archive</span></a>
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        <div class="main">
            <ul class="cbp_tmtimeline">
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-10 18:30">
                        <span>4/10/13</span> <span>18:30</span></time>
                    <div class="cbp_tmicon cbp_tmicon-phone">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Ricebean black-eyed pea</h2>
                        <p>
                            Winter purslane courgette pumpkin quandong komatsuna fennel green bean cucumber
                            watercress. Pea sprouts wattle seed rutabaga okra yarrow cress avocado grape radish
                            bush tomato ricebean black-eyed pea maize eggplant. Cabbage lentil cucumber chickpea
                            sorrel gram garbanzo plantain lotus root bok choy squash cress potato summer purslane
                            salsify fennel horseradish dulse. Winter purslane garbanzo artichoke broccoli lentil
                            corn okra silver beet celery quandong. Plantain salad beetroot bunya nuts black-eyed
                            pea collard greens radish water spinach gourd chicory prairie turnip avocado sierra
                            leone bologi.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-11T12:04">
                        <span>4/11/13</span> <span>12:04</span></time>
                    <div class="cbp_tmicon cbp_tmicon-screen">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Greens radish arugula</h2>
                        <p>
                            Caulie dandelion maize lentil collard greens radish arugula sweet pepper water spinach
                            kombu courgette lettuce. Celery coriander bitterleaf epazote radicchio shallot winter
                            purslane collard greens spring onion squash lentil. Artichoke salad bamboo shoot
                            black-eyed pea brussels sprout garlic kohlrabi.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-13 05:36">
                        <span>4/13/13</span> <span>05:36</span></time>
                    <div class="cbp_tmicon cbp_tmicon-mail">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Sprout garlic kohlrabi</h2>
                        <p>
                            Parsnip lotus root celery yarrow seakale tomato collard greens tigernut epazote
                            ricebean melon tomatillo soybean chicory broccoli beet greens peanut salad. Lotus
                            root burdock bell pepper chickweed shallot groundnut pea sprouts welsh onion wattle
                            seed pea salsify turnip scallion peanut arugula bamboo shoot onion swiss chard.
                            Avocado tomato peanut soko amaranth grape fennel chickweed mung bean soybean endive
                            squash beet greens carrot chicory green bean. Tigernut dandelion sea lettuce garlic
                            daikon courgette celery maize parsley komatsuna black-eyed pea bell pepper aubergine
                            cauliflower zucchini. Quandong pea chickweed tomatillo quandong cauliflower spinach
                            water spinach.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-15 13:15">
                        <span>4/15/13</span> <span>13:15</span></time>
                    <div class="cbp_tmicon cbp_tmicon-phone">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Watercress ricebean</h2>
                        <p>
                            Peanut gourd nori welsh onion rock melon mustard jícama. Desert raisin amaranth
                            kombu aubergine kale seakale brussels sprout pea. Black-eyed pea celtuce bamboo
                            shoot salad kohlrabi leek squash prairie turnip catsear rock melon chard taro broccoli
                            turnip greens. Fennel quandong potato watercress ricebean swiss chard garbanzo.
                            Endive daikon brussels sprout lotus root silver beet epazote melon shallot.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-16 21:30">
                        <span>4/16/13</span> <span>21:30</span></time>
                    <div class="cbp_tmicon cbp_tmicon-earth">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Courgette daikon</h2>
                        <p>
                            Parsley amaranth tigernut silver beet maize fennel spinach. Ricebean black-eyed
                            pea maize scallion green bean spinach cabbage jícama bell pepper carrot onion corn
                            plantain garbanzo. Sierra leone bologi komatsuna celery peanut swiss chard silver
                            beet squash dandelion maize chicory burdock tatsoi dulse radish wakame beetroot.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-17 12:11">
                        <span>4/17/13</span> <span>12:11</span></time>
                    <div class="cbp_tmicon cbp_tmicon-screen">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Greens radish arugula</h2>
                        <p>
                            Caulie dandelion maize lentil collard greens radish arugula sweet pepper water spinach
                            kombu courgette lettuce. Celery coriander bitterleaf epazote radicchio shallot winter
                            purslane collard greens spring onion squash lentil. Artichoke salad bamboo shoot
                            black-eyed pea brussels sprout garlic kohlrabi.</p>
                    </div>
                </li>
                <li>
                    <time class="cbp_tmtime" datetime="2013-04-18 09:56">
                        <span>4/18/13</span> <span>09:56</span></time>
                    <div class="cbp_tmicon cbp_tmicon-phone">
                    </div>
                    <div class="cbp_tmlabel">
                        <h2>
                            Sprout garlic kohlrabi</h2>
                        <p>
                            Parsnip lotus root celery yarrow seakale tomato collard greens tigernut epazote
                            ricebean melon tomatillo soybean chicory broccoli beet greens peanut salad. Lotus
                            root burdock bell pepper chickweed shallot groundnut pea sprouts welsh onion wattle
                            seed pea salsify turnip scallion peanut arugula bamboo shoot onion swiss chard.
                            Avocado tomato peanut soko amaranth grape fennel chickweed mung bean soybean endive
                            squash beet greens carrot chicory green bean. Tigernut dandelion sea lettuce garlic
                            daikon courgette celery maize parsley komatsuna black-eyed pea bell pepper aubergine
                            cauliflower zucchini. Quandong pea chickweed tomatillo quandong cauliflower spinach
                            water spinach.</p>
                    </div>
                </li>
            </ul>
        </div>
    </div>

  *, *:after, *:before
        {
            -webkit-box-sizing: border-box;
            -moz-box-sizing: border-box;
            box-sizing: border-box;
        }
        body, html
        {
            font-size: 100%;
            padding: 0;
            margin: 0;
        }
        
        /* Clearfix hack by Nicolas Gallagher: http://nicolasgallagher.com/micro-clearfix-hack/ */
        .clearfix:before, .clearfix:after
        {
            content: " ";
            display: table;
        }
        .clearfix:after
        {
            clear: both;
        }
        
        body
        {
            font-family: ‘Lato‘ , Calibri, Arial, sans-serif;
            color: #47a3da;
        }
        
        a
        {
            color: #f0f0f0;
            text-decoration: none;
        }
        
        a:hover
        {
            color: #000;
        }
        
        .main, .container > header
        {
            width: 90%;
            max-width: 69em;
            margin: 0 auto;
            padding: 0 1.875em 3.125em 1.875em;
        }
        
        .container > header
        {
            padding: 2.875em 1.875em 1.875em;
        }
        
        .container > header h1
        {
            font-size: 2.125em;
            line-height: 1.3;
            margin: 0 0 0.6em 0;
            float: left;
            font-weight: 400;
        }
        
        .container > header > span
        {
            display: block;
            position: relative;
            z-index: 9999;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5em;
            padding: 0 0 0.6em 0.1em;
        }
        
        .container > header > span span:after
        {
            width: 30px;
            height: 30px;
            left: -12px;
            font-size: 50%;
            top: -8px;
            font-size: 75%;
            position: relative;
        }
        
        .container > header > span span:hover:before
        {
            content: attr(data-content);
            text-transform: none;
            text-indent: 0;
            letter-spacing: 0;
            font-weight: 300;
            font-size: 110%;
            padding: 0.8em 1em;
            line-height: 1.2;
            text-align: left;
            left: auto;
            margin-left: 4px;
            position: absolute;
            color: #fff;
            background: #47a3da;
        }
        
        .container > header nav
        {
            float: right;
            text-align: center;
        }
        
        .container > header nav a
        {
            display: inline-block;
            position: relative;
            text-align: left;
            width: 2.5em;
            height: 2.5em;
            background: #fff;
            border-radius: 50%;
            margin: 0 0.1em;
            border: 4px solid #47a3da;
        }
        
        .container > header nav a > span
        {
            display: none;
        }
        
        .container > header nav a:hover:before
        {
            content: attr(data-info);
            color: #47a3da;
            position: absolute;
            width: 600%;
            top: 120%;
            text-align: right;
            right: 0;
            pointer-events: none;
        }
        
        .container > header nav a:hover
        {
            background: #47a3da;
        }
        
        .bp-icon:after
        {
            font-family: ‘bpicons‘;
            speak: none;
            font-style: normal;
            font-weight: normal;
            font-variant: normal;
            text-transform: none;
            text-align: center;
            color: #47a3da;
            -webkit-font-smoothing: antialiased;
        }
        
        .container > header nav .bp-icon:after
        {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            line-height: 2;
            text-indent: 0;
        }
        
        .container > header nav a:hover:after
        {
            color: #fff;
        }
        
        .bp-icon-next:after
        {
            content: "\e000";
        }
        .bp-icon-drop:after
        {
            content: "\e001";
        }
        .bp-icon-archive:after
        {
            content: "\e002";
        }
        .bp-icon-about:after
        {
            content: "\e003";
        }
        .bp-icon-prev:after
        {
            content: "\e004";
        }
        
        @media screen and (max-width: 55em)
        {
        
            .container > header h1, .container > header nav
            {
                float: none;
            }
        
            .container > header > span, .container > header h1
            {
                text-align: center;
            }
        
            .container > header nav
            {
                margin: 0 auto;
            }
        
            .container > header > span
            {
                text-indent: 30px;
            }
        }
        
        /* COMPONENT.CSS */
        
        /* Made with http://icomoon.io/ */
        
        .cbp_tmtimeline
        {
            margin: 30px 0 0 0;
            padding: 0;
            list-style: none;
            position: relative;
        }
        
        /* The line */
        .cbp_tmtimeline:before
        {
            content: ‘‘;
            position: absolute;
            top: 0;
            bottom: 0;
            width: 10px;
            background: #afdcf8;
            left: 20%;
            margin-left: -10px;
        }
        
        .cbp_tmtimeline > li
        {
            position: relative;
        }
        
        /* The date/time */
        .cbp_tmtimeline > li .cbp_tmtime
        {
            display: block;
            width: 25%;
            padding-right: 100px;
            position: absolute;
        }
        
        .cbp_tmtimeline > li .cbp_tmtime span
        {
            display: block;
            text-align: right;
        }
        
        .cbp_tmtimeline > li .cbp_tmtime span:first-child
        {
            font-size: 0.9em;
            color: #bdd0db;
        }
        
        .cbp_tmtimeline > li .cbp_tmtime span:last-child
        {
            font-size: 2.9em;
            color: #3594cb;
        }
        
        .cbp_tmtimeline > li:nth-child(odd) .cbp_tmtime span:last-child
        {
            color: #6cbfee;
        }
        
        /* Right content */
        .cbp_tmtimeline > li .cbp_tmlabel
        {
            margin: 0 0 15px 25%;
            background: #3594cb;
            color: #fff;
            padding: 2em;
            font-size: 1.2em;
            font-weight: 300;
            line-height: 1.4;
            position: relative;
            border-radius: 5px;
        }
        
        .cbp_tmtimeline > li:nth-child(odd) .cbp_tmlabel
        {
            background: #6cbfee;
        }
        
        .cbp_tmtimeline > li .cbp_tmlabel h2
        {
            margin-top: 0px;
            padding: 0 0 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.4);
        }
        
        /* The triangle */
        .cbp_tmtimeline > li .cbp_tmlabel:after
        {
            right: 100%;
            border: solid transparent;
            content: " ";
            height: 0;
            width: 0;
            position: absolute;
            pointer-events: none;
            border-right-color: #3594cb;
            border-width: 10px;
            top: 10px;
        }
        
        .cbp_tmtimeline > li:nth-child(odd) .cbp_tmlabel:after
        {
            border-right-color: #6cbfee;
        }
        
        /* The icons */
        .cbp_tmtimeline > li .cbp_tmicon
        {
            width: 40px;
            height: 40px;
            font-family: ‘ecoico‘;
            speak: none;
            font-style: normal;
            font-weight: normal;
            font-variant: normal;
            text-transform: none;
            font-size: 1.4em;
            line-height: 40px;
            -webkit-font-smoothing: antialiased;
            position: absolute;
            color: #fff;
            background: #46a4da;
            border-radius: 50%;
            box-shadow: 0 0 0 8px #afdcf8;
            text-align: center;
            left: 20%;
            top: 0;
            margin: 0 0 0 -25px;
        }
        
        .cbp_tmicon-phone:before
        {
            content: "\e000";
        }
        
        .cbp_tmicon-screen:before
        {
            content: "\e001";
        }
        
        .cbp_tmicon-mail:before
        {
            content: "\e002";
        }
        
        .cbp_tmicon-earth:before
        {
            content: "\e003";
        }
        
        /* Example Media Queries */
        @media screen and (max-width: 65.375em)
        {
        
            .cbp_tmtimeline > li .cbp_tmtime span:last-child
            {
                font-size: 1.5em;
            }
        }
        
        @media screen and (max-width: 47.2em)
        {
            .cbp_tmtimeline:before
            {
                display: none;
            }
        
            .cbp_tmtimeline > li .cbp_tmtime
            {
                width: 100%;
                position: relative;
                padding: 0 0 20px 0;
            }
        
            .cbp_tmtimeline > li .cbp_tmtime span
            {
                text-align: left;
            }
        
            .cbp_tmtimeline > li .cbp_tmlabel
            {
                margin: 0 0 30px 0;
                padding: 1em;
                font-weight: 400;
                font-size: 95%;
            }
        
            .cbp_tmtimeline > li .cbp_tmlabel:after
            {
                right: auto;
                left: 20px;
                border-right-color: transparent;
                border-bottom-color: #3594cb;
                top: -20px;
            }
        
            .cbp_tmtimeline > li:nth-child(odd) .cbp_tmlabel:after
            {
                border-right-color: transparent;
                border-bottom-color: #6cbfee;
            }
        
            .cbp_tmtimeline > li .cbp_tmicon
            {
                position: relative;
                float: right;
                left: auto;
                margin: -55px 5px 0 0px;
            }
        }