* {
    margin: 0px;
    padding: 0px;
    text-decoration: none;
    list-style: none;
}

html,body {
    margin:0 auto;
    width: 100%;
    height: 100%;
}

#product_main {
    width: 100%;
    min-width: 1200px;
    height: 457px;
    margin-right: auto;
    margin-left: auto;
}

a {
    text-decoration: none;
    color: #000000;
}
.product_banner{
    position: relative;
    height: 411px;
    width: 100%;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    justify-content: center;
    -webkit-justify-content: center;
    background-position: center;
    background-repeat: no-repeat;
}
.product_banner > div{
    -webkit-display: flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    position: relative;
    justify-content: space-around;
}
.product_banner > div > input {
    cursor: pointer;
    height: 50px;
    width: 138px;
    font-size: 20px;
    border-radius: 8px;
    top: 300px;
}

.red_block {
    background-color: #ce2d32;
    height: 60px;
    width: 100%;
    position: relative;
    cursor: pointer
}
.red_block > div {
    position: absolute;
    height: 60px;
    display: block;
    margin: 0 auto;
    width: 11%;
}
#link1{
    left: 30%;
}
#link2{
    left: 44.3%;
}
#link3{
    left: 58.6%;
}
.red_block > div > a {
    margin: 0 auto;
    display: block;
    text-align: center;
    font-family: 思源黑体;
    font-size: 24px;
    line-height: 60px;
    text-decoration: none;
}

.product_introduce {
    position: relative;
    background-position: center;
    background-repeat: no-repeat;
    height: 343px;
    width: 100%;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    flex-wrap:wrap;
}

.title {
    position: relative;
    text-align: center;
    font-size: 28px;
    font-family: 思源黑体;
    color: #ce2d32;
    top: 30px;
    width: 100%;
}

.introduce_content {
    position: relative;
    width: 1200px;
    height: 260px;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    flex-wrap: wrap;
}

.introduce_content > div {
    font-family: 思源黑体;
    font-size: 18px;
    line-height: 30px;
    width: 700px;
    margin-left: 60px;
    margin-right: 30px;
}

.product_function {
    position: relative;
    background-position: center;
    background-repeat: no-repeat;
    width: 100%;
}

.function_content {
    position: relative;
    width: 100%;
    top: 40px;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    /*justify-content:center;*/
    flex-wrap:wrap;
}

.white_box {
    margin: 20px auto;
    background: url("../../cvicse/image/whitebox.png");
    -webkit-display:flex;
    display:flex;
    -webkit-align-items: center;
    align-items: center;
    -webkit-justify-content: space-around;
    justify-content: space-around;
    width: 1161px;
    height: 158px;
}
.white_box>img{
    margin-left: -85px;
}
.white_box > div {
    margin-left: -230px;
    width: 884px;
}

.p1 {
    font-family: 思源黑体;
    font-size: 20px;
    color: #ce2d32;
    font-weight: bold;
    line-height: 40px;
}

.p2 {
    font-family: 思源宋体;
    font-size: 15px;
    line-height: 35px
}

.product_case {
    position: relative;
    background-position: center;
    background-repeat: no-repeat;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    flex-wrap:wrap;
    width: 100%;
}

.case_content {
    position: relative;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    flex-wrap: wrap;
}

.about_container{
    position: relative;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    background-image: url("../../cvicse/image/about_img.jpg");
    background-position: center;
    background-repeat:no-repeat;
    width:100%;
    height:165px
}
.about_container p{
    font-family: 'Times New Roman'，思源黑体
}
.about_container a:hover{
    color: #667386;
}
.about_container a:active{
    color: #979aac;
}
.records{
    position: relative;
    -webkit-display:flex;
    display:flex;
    -webkit-align-items:center;
    align-items:center;
    -webkit-justify-content:center;
    justify-content:center;
    background-color: #cfcfcf;
    width:100%;
    height:46px
}
.records a:hover{
    color: #667386;
}
.records a:active{
    color: #979aac;
}
.red_block .changed {
    border-bottom: 5px solid #FFFFFF;
    font-color: #FFFFFF;
    padding-bottom: 0px;
    transition: border-bottom-width 0.6s;
}

.changed a {
    color: #FFFFFF;
}

input {
    outline: none;
    border: none;
}
#btn1{
    border:0.125rem solid #ce2d32;
    background-color:white;
    color: #ce2d32;
}
#btn2{
    border:0.125rem solid #ce2d32;
    background-color:white;
    color: #ce2d32;
}
#btn1:active{
    background-color: red;
    color: white;
    border-color: white;
}
#btn2:active{
    background-color: red;
    color: white;
    border-color: white;
}