header{
    width: 100%;
    height: 65px;
    border-bottom: 1px solid #e0e0e0;
    padding: 8px;
    display: flex;
    position: fixed;
}
.nav_left{
    position: absolute;
    left: auto;
    top: auto;
}

.ment_btn{
    width: 48px;
    height: 48px;
    float: left;
    border-radius: 50%;
    cursor: pointer;
    margin: 0 4px;
    position: relative;
}
.ment_btn:hover{
    background-color: #F0F0F0;
}
.ment_btn img{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 18px;
    height: 12px;
}
.logo{
    width: 74px;
    height: 24px;
    float: left;
    margin: 14px auto auto auto;
}
.nav_left span{
    display: block;
    font-family: "Product Sans", Arial, sans-serif;
    font-size: 22px;
    line-height: 28px;
    overflow: hidden;
    padding-left: 4px;
    position: relative;
    text-overflow: ellipsis;
    top: -1.5px;
    vertical-align: middle;
    color: #5f6368;
    margin-top: 12px;
    cursor: pointer;
}
.nav_right{
    position: absolute;
    right: 0px;
    top: auto;
}
.nav_right .sz_btn{
    float: left;
    width: 40px;
    height: 40px;
    margin-top: 4px;
    margin-bottom: 4px;
    margin-right: 2px;
    margin-left: 4px;
    border-radius: 50px;
    cursor: pointer;
    position: relative;
}
.nav_right .sz_btn:hover{
    background-color: #F0F0F0;
}
.sz_btn img{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 20.5px;
    height: 20.5px;
}
.btn2 img{
    width: 16px;
    height: 16px;
}
.btn3{
    float: left;
    width: 96px;
    height: 36px;
    margin-top: 6px;
    margin-bottom: 6px;
    cursor: pointer;
    position: relative;
    background-color: #1a73e8;
    border-radius: 4px;
    margin-left: 10px;
    margin-right: 20px;
}
.btn3 span{
    font-family: Google Sans, Roboto, Helvetica, Arial, sans-serif;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: .25px;
    line-height: 36px;
    width: 96px;
    text-align: center;
    box-sizing: border-box;
    color: #ffffff;
    display: block;
}
.btn3:hover{
    background-color: #1B66C9;
}

main{
    width: 100%;
    height: auto;
}
.tab_box{
    width: 100%;
    height: 68px;
    margin-top: 65px;
    float: left;
    padding: 16px 0;
}
.tab_box ul{
    width: 1280px;
    height: auto;
    margin: 0 auto;
}
.tab_btn{
    float: left;
    width: 82px;
    height: 36px;
    border-radius: 4px;
    /* box-shadow: 0 0 0 1px #DADCE0; */
    margin-right: .6em;
    color: rgb(25, 103, 210);
    font-size: 14px;
    top: -1px;
    left: -1px;
    bottom: -1px;
    right: -1px;
    border-width: 1px;
    border-color: #DADCE0;
    border-style: solid;
    transform: translateY(-1px);
    padding: 0 15px 0 11px;
    cursor: pointer;
}
.tab_btn:first-child{
    background: #E8F0FE;
}
.tab_btn:first-child:hover{
    opacity: 0.8;
    background: #E8F0FE;
}
.tab_btn:hover{
    background-color: #F6FAFE;
}
.tab_btn_box{
    float: left;
    width: 20px;
    height: 24px;
    margin: 6px auto;
}
.tab_btn img{
    float: left;
    margin-right: 5px;
}
.img1{
    width: 19px;
    height: 18px;
    margin-top: 2px;
}
.img2{
    width: 16px;
    height: 15px;
    margin-top: 4px;
    margin-left: 2px;
}
.img3{
    width: 18px;
    height: 17px;
    margin-top: 2px;
    margin-left: 1px;
}
.img4{
    width: 17px;
    height: 16px;
    margin-top: 3px;
    margin-left: 1.5px;
}
.tab_btn span{
    font-family: "Product Sans", Arial, sans-serif;
    font-size: 14px;
    line-height: 36px;
    overflow: hidden;
    padding-left: 6px;
    position: relative;
    text-overflow: ellipsis;
    float: left;
}
.content{
    width: 1280px;
    height: auto;
    margin: 0 auto;
}
.content_top{
    width: 100%;
    height: 48px;
    float: left;
}
.ul1{
    width: 616px;
    height: 48px;
    float: left;
}
.ul1 li{
    float: left;
    width: auto;
    height: 48px;
    line-height: 44px;
    cursor: pointer;
    padding: 0 8.5px;
    font-family: "Roboto", arial, sans-serif;
    font-size: 14px;
    font-weight: 500;
    text-transform: none;
    min-width: auto;
    color: #5F6368;
}
.ul1 li:hover{
    background-color: #F7F8F8;
}
.ul1 li:first-child{
    margin-left: 9px;
    color: #3482EB;
    border-bottom: #3482EB solid 2px;
}
.ul1 li:first-child:hover{
    background-color: #F6FAFE;
}
.ul1_btn{
    width: 40px;
    height: 40px;
    float: left;
    position: relative;
    margin-left: 10px;
    margin-top: 3px;
    border-radius: 50%;
    cursor: pointer;
}
.ul1_btn img{
    width: 13px;
    height: 8px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.ul1_btn:hover{
    background-color: #F5F5F5;
}
.material_icons{
    width: 40px;
    height: 40px;
    float: left;
    background-image: url(../images/5.png);
    background-position: center;
    background-size: 19px 14px;
    background-repeat: no-repeat;
    cursor: pointer;
    margin: 3px auto;
    margin-left: 4px;
}
.ul2{
    margin-left: 4px;
}
.content_main{
    width: calc(100% + 8px);;
    height: auto;
    margin: 0 auto;
}
.comment{
    width: 636px;
    height: 165px;
    max-height: 165px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,.12);
    font-family: inherit;
    font-size: 24px;
    overflow: auto hidden;
    padding: 12px 16px;
    position: relative;
    float: left;
}
.comment_bottom{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 48px;
    /* background-color: #F5F5F5; */
    display: inline-block;
}
.mai{
    width: 14px;
    height: 19.5px;
    display: block;
    position: absolute;
    bottom:  15px;
    left: 21px;
}
.comment_bottom span{
    font-family:  Arial, sans-serif;
    line-height: 45px;
    color: rgb(107, 111, 114);
    font-size: 12px;
    position: absolute;
    bottom: 0;
    right: 70px;
}
.bi{
    width: 17px;
    height: 14px;
    display: block;
    position: absolute;
    bottom:  11px;
    right: 29px;
}
.comment2{
    background-color: #F5F5F5;
    border: 1px solid #F5F5F5;
    margin-left: 8px;
}
.comment2 p{
    font-family: Arial, sans-serif;
    color: #5F6368;
    float: left;
    margin-top: -3px;
    margin-left: -1px;
}
em{
    color: rgb(95,99,104);
    float: right;
    margin-right: 8px;
    font-size: 11px;
    margin-top: 8px;
}

footer{
    width:100%;
    height: auto;
    overflow: hidden;
}
.footer_main{
    width: auto;
    display: table;
    margin: 0 auto;
    margin-top: 72px;
}
.footerbox{
    width: 72px;
    height: 98px;
    float: left;
}
.footerimg{
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, .12);
    position: relative;

}
.footerimg img{
    width: 27px;
    height: 27px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.footerbox p{
    font-size: 13px;
    color: rgba(0, 0, 0, .54);
    text-align: center;
    font-family: "Google Sans", "sans-serif";
    font-weight: 500;
    line-height: 18px;
    margin-top: 8px;
    user-select: none;
}
.footerbox:first-child{
    margin-right: 62px;
}

.windows{
    display: none;
    width: 450px;
    height: 145px;
    box-shadow: 0 3px 6px rgba(0,0,0,.04), 0 3px 6px  rgba(0,0,0,.04);
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,.04);
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%,-50%);
    background: #fff;
    z-index: 999;
    padding: 20px;
}
.windows p{
    font-family: "Google Sans", "sans-serif";
    color: rgba(0, 0, 0, .87);
    text-align: left;
}
.wp1{
    font-size: 16px;
}
.wp2{
    font-size: 14px;
    margin-top: 8px;
    margin-bottom: 8px;
}
.button{
    display: block;
    width: 80px;
    height: 36px;
    line-height: 34px;
    border-radius: 4px;
    /* border: 1px solid #1a73e8; */
    color: #fff;
    background-color: #1a73e8;
    font-family: "Google Sans", "sans-serif";
    text-align: center;
    font-size: 14px;
    position: absolute;
    bottom: 20px;
    right: -20px;
    transform: translate(-50%,0);
}
.close-btn{
    width: 24px;
    height: 24px;
    background-color: #fff;
    border-radius: 50%;
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
}
.close-btn img{
    width: 20px;
    height: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}