*{
    margin: 0px;
    padding: 0px;
}
#all{
    width: 1490px;
    height: 900px;
    margin: auto;
    background-color: #f5f5f5;
}
.head{
    width: 1490px;
    height: 107px;
}
/* 导航栏样式 */
.head-top{
    width: 1490px;
    height: 70px;
    background-color: rgb(42, 37, 37);
    float: left;
    border-bottom: 4px solid red;
}
.head-top ul{
    margin-left: 100px;
    width:auto;
    height: 70px;
    float: left;
}
.head-top .img1{
    height: 70px;
    margin-left: 100px;
    float: left;
    margin-right: 20px;
}
.head-top ul li{
    float: left;
    height: 70px;
    width: 90px;
    display: block;
    line-height: 70px;
    text-align: center;
}
.head-top ul li a{
    text-decoration: none;
    color: white;
    width: 90px;
    height: 70px;
    display: block;
}
.head-top ul li a:hover{
    background-color:#0a0909 ;
}
/* 黑色：0a0909，红色：d40505 */
.head-top ul li.selected{
    /* background-color: aqua; */
    background-image: url('../img/导航栏1.png');
    width: 90px;
    height: 70px;  
}
input::-webkit-input-placeholder{   /* 使用webkit内核的浏览器 */
        color: #9e9a9a;
        padding-left: 10px;
    }
.head-top ul input{
    float: left;
    height: 30px;
    border-radius: 40px;
    margin-left: 60px;
    margin-top: 18px;
    text-align: center;
}
.head-top ul button{
    float: left;
    border-radius: 40px;
    width: 90px;
    height: 34px;
    margin-top: 18px;
    background-color: black;
    border: 1px solid rgb(108, 103, 103);
    margin-left: 10px;
    font-size: 10px;
}
.head-top ul button a{
    text-decoration: none;
    color: white;
}
.head-top ul button:hover{
    border: 1px solid rgb(233, 230, 230);
}
.head-top .img2{
    float: left;
    height: 34px;
    width: 34px;
    border-radius: 50%;
    margin-top: 18px;
    margin-left: 30px;
}

.czz_bt{
    width: 1490px;
    height: 80px;
    margin-top: calc(18vh - 27px);
    margin-bottom: 12px;
    float: left;
}
.czz_bt h2{
    line-height: 80px;
    font-weight: 300;
    color: #000;
    opacity: 0.8;
    font-size: 60px;
    width: 300px;
    margin: auto;
}
.czz_bt_1{
    width: 1490px;
    height: 20px;
    margin-top:10px;
    margin-bottom: 12px;
    float: left;
}
.czz_bt_1 p{
    margin: auto;
    font-size: 14px;
    color: #000000;
    opacity: 0.4;
    margin-bottom: 50px;
    letter-spacing: 2px;
    font-weight: 400;
    width: 200px;
}

.czz_con{
    width: 1490px;
    height: 230px;
    float: left;
    margin-top: 30px;
}
.czz_con .con_1{
    width: 300px;
    height: 230px;
    float: left;
    background-color: white;
    margin: 0px 0px 0px 270px;
    border-radius: 10px;
}
.czz_con .con_1 img{
    width: 300px;
    height: 95px;
    margin-top: 30px;
}
.czz_con .con_1 h2{
    width: 130px;
    height: 34px;
    font-size: 26px;
    color: #000;
    margin: auto;
}
.czz_con .con_1 p{
    width: 160px;
    height: 20px;
    font-size: 16px;
    margin: auto;
    color: #000;
    margin-top: 10px;
}

.czz_con .con_2{
    width: 300px;
    height: 230px;
    float: left;
    background-color: white;
    margin: 0px 0px 0px 30px;
    border-radius: 10px;
}
.czz_con .con_2 img{
    width: 300px;
    height: 95px;
    margin-top: 30px;
}
.czz_con .con_2 h2{
    width: 130px;
    height: 34px;
    font-size: 26px;
    color: #000;
    margin: auto;
}
.czz_con .con_2 p{
    width: 160px;
    height: 20px;
    font-size: 16px;
    margin: auto;
    color: #000;
    margin-top: 10px;
}

.czz_con .con_3{
    width: 300px;
    height: 230px;
    float: left;
    background-color: white;
    margin: 0px 0px 0px 30px;
    border-radius: 10px;
}
.czz_con .con_3 img{
    width: 300px;
    height: 95px;
    margin-top: 30px;
}
.czz_con .con_3 h2{
    width: 130px;
    height: 34px;
    font-size: 26px;
    color: #000;
    margin: auto;
}
.czz_con .con_3 p{
    width: 160px;
    height: 20px;
    font-size: 16px;
    margin: auto;
    color: #000;
    margin-top: 10px;
}

.czz_bottom {
    width: 1490px;
    height: 106px;
    margin-top: 30px;
    float: left;
}
.czz_bottom .con_4{
    margin-left: 270px;
    width: 463px;
    height: 106px;
    background-color: white;
    border-radius: 10px;
    float: left;
    
}
.czz_bottom .con_4 h2{
    width: 288px;
    height: 26px;
    opacity: 0.8;
    font-size: 20px;
    color: #000000;
    margin-bottom: 2px;
    padding: 20px 40px 10px 40px;
}
.czz_bottom .con_4 p{
    width: 288px;
    height: 20px;
    opacity: 0.6;
    font-size: 16px;
    color: #000000;
    font-weight: 300;
    padding: 0px 40px;
}
.czz_bottom .con_4 button{
    width: 90px;
    height: 32px;
    text-align: center;
    line-height: 32px;
    font-size: 12px;
    color: #000;
    border: 1px solid rgba(151,151,151,0.2);
    border-radius: 30px;
    float: left;
    background-color: white;
    margin: -40px 0px 0px 335px;
}

.czz_bottom .con_5{
    margin-left: 30px;
    width: 463px;
    height: 106px;
    background-color: white;
    border-radius: 10px;
    float: left;
    
}
.czz_bottom .con_5 h2{
    width: 288px;
    height: 26px;
    opacity: 0.8;
    font-size: 20px;
    color: #000000;
    margin-bottom: 2px;
    padding: 20px 40px 10px 40px;
}
.czz_bottom .con_5 p{
    width: 288px;
    height: 20px;
    opacity: 0.6;
    font-size: 16px;
    color: #000000;
    font-weight: 300;
    padding: 0px 40px;
}
.czz_bottom .con_5 button{
    width: 90px;
    height: 32px;
    text-align: center;
    line-height: 32px;
    font-size: 12px;
    color: #000;
    border: 1px solid rgba(151,151,151,0.2);
    border-radius: 30px;
    float: left;
    background-color: white;
    margin: -40px 0px 0px 335px;
}