纯css3鼠标经过图片显示描述特效 css中鼠标经过时显示图片

<div align="center">
        <div class="carre_couleur base_hov" style="">
            <a target="_blank" href="http://www.w2bc.com">
                <div class="retract" style="background-color: #f8b334;">
                    <img src="img/1.png"></div>
                <div class="acced">
                    <div class="big_acced" style="color: #f39c12;">
                        BEST HOME</div>
                    <div class="middle_acced">
                        This home is the best</div>
                </div>
            </a>
        </div>
        <div class="carre_couleur base_hov" style="background-color: #2ecc71;">
            <a target="_blank" href="http://www.w2bc.com">
                <div class="retract" style="background-color: #2ecc71;">
                    <img src="img/2.png"></div>
                <div class="acced">
                    <div class="big_acced" style="color: #27ae60;">
                        BEST PIC</div>
                    <div class="middle_acced">
                        This pic is the best</div>
                </div>
            </a>
        </div>
        <div class="carre_couleur base_hov" style="background-color: #e74c3c;">
            <a target="_blank" href="http://www.w2bc.com">
                <div class="retract" style="background-color: #e74c3c;">
                    <img src="img/3.png"></div>
                <div class="acced">
                    <div class="big_acced" style="color: #c0392b;">
                        BEST PC</div>
                    <div class="middle_acced">
                        This computer is the best</div>
                </div>
            </a>
        </div>

.carre_couleur
        {
            width: 200px;
            height: 200px;
            display: inline-block;
            position: relative;
            margin-top: 0px;
        }
        .base_hov .retract
        {
            -webkit-transition: all 200ms ease-in;
            -webkit-transform-origin: 50% 20%;
            -webkit-transform: scale(1);
            -moz-transition: all 200ms ease-in;
            -moz-transform-origin: 50% 20%;
            -moz-transform: scale(1);
            -ms-transition: all 200ms ease-in;
            -ms-transform-origin: 50% 20%;
            -ms-transform: scale(1);
            transition: all 200ms ease-in;
            transform-origin: 50% 20%;
            transform: scale(1);
            width: 200px;
            height: 200px;
            position: absolute;
            z-index: 2;
            left: 0;
        }
        .base_hov:hover .retract
        {
            -webkit-transition: all 200ms ease-in;
            -webkit-transform: scale(0.6);
            -moz-transition: all 200ms ease-in;
            -moz-transform: scale(0.6);
            -ms-transition: all 200ms ease-in;
            -ms-transform: scale(0.6);
            transition: all 200ms ease-in;
            transform: scale(0.6);
        }
        .acced
        {
            width: 180px;
            padding: 10px;
            bottom: 0;
            position: absolute;
            z-index: 1;
            text-align: left;
        }
        .big_acced
        {
            color: #ffffff;
            font-size: 25px;
            font-weight: 400;
        }
        .middle_acced
        {
            color: #ffffff;
            font-size: 15px;
            font-weight: 400;
        }