第一阶段项目（3）

<style>属性

*{
                margin: 0px;
                padding: 0px;
            }
            .H1{
                width: 100%;
            }
            .top-nav{
                width: 1200px;
                height: 65px;
                /*background-color: #87CEFA;*/
                margin: 0px auto;
            }
            .tn1{
                width: 100px;
                height: 62px;
                /*background-color: black;*/
                margin-left: 100px;
                float: left;
            }
            .ykbz{
                width: 80px;
                height: 62px;
                line-height: 62px;
                text-align: center;
                margin: 0px 0px 0px 650px;
                float: left;
                font-size: 14px;
                color: black;
            }
            .ykbz:hover{
                color: yellow;
            }
            .tn3{
                width: 80px;
                height: 62px;
                line-height: 62px;
                text-align: center;
                margin: 0px 100px 0px 0px;
                float: left;
                font-size: 14px;
                color: black;
            }
            .a1{
                width: 1349px;
                height: 40px;
                line-height: 40px;
                background-color: forestgreen;
            }

            .A1{
                width: 792px;
                height: 40px;
                margin: 0px 0px 0px 80px;
                float: left;
            }
            .a11 {
                float: left;
                font-size: 16px;
                color: white;
                transition: all 0.3s linear 0s;
                width: 88px;
                text-align: center;
            }
            .a11:hover{
                background-color: chocolate;
            }
            a{
                text-decoration: none;
            }
            .a2{
                width: 1349px;
                height: 500px;
                background-color: #6495ED;
                background-image: url(img/jilv背景图.png);
                position: absolute;
            }
            .text{
                width: 675px;
                height: 110px;
                background-color: black;
                opacity: 0.6;
                margin: 280px 0px 0px 336px;
                position: absolute;

            }
            .text1{
                width: 636px;
                height: 45px;
                background-color: #228B22;
                margin: 0px auto;
                margin-top: 20px;
                /*position: relative;*/

            }
            .t1a{
                width: 555px;
                height: 45px;
                background-color: #6495ED;
                float: left;
            }
            .ta1a{
                width: 535px;
                height: 30px;
                margin: 8px 0px 0px 10px;

                font-size: 18px;
                font-family: "microsoft yahei";
            }
            .t1{
                width: 555px;
                height: 43px;
                background-color: white;
                opacity: 2.1;
            }
            .t1b{
                width: 80px;
                height: 45px;
                background-color: #FF0000;
                float: left;
                text-align: center;
                font-size: 30PX;
            }
            a{
                color: white;
            }
            .dizhi{
                width: 28px;
                height: 24px;
                float: left;
                /*background-color: yellow;*/
                font-size: 14px;
                margin-left: 20px;
                margin-top: 10px;
                text-align: center;
                line-height: 24px;
            }
            a:hover{
                color: #FF8C00;
            }
            .dizhi1{
                width: 119px;
                height: 24px;
                float: left;
                font-size: 14px;
                margin-left: 20px;
                margin-top: 10px;
                text-align: center;
                line-height: 24px;
            }

            .a3{
                width: 1200px;
                height: 200px;
                text-align: center;
                border: 1px solid white;
                margin: 0px auto;
                margin-top: 500px;
            }
            .b{
                width: 1200px;
                height: 150px;
                /*border: 1px solid black;*/
                margin: 0px auto;
                margin-top: 30px;
                /*background-color: #000000;*/
            }