* {
    margin: 0;
    padding: 0;
    outline: none;
    border: 0;
    font-family: sans-serif;
    /*overflow-x: hidden;*/
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
}

*:focus {
    outline: none;
}

a {
    text-decoration: none;
    color: #3e3e3e;
    display: block;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border: 0;
    pointer-events: none;
}

img[src=""],
img:not([src]) {
    opacity: 0;
}

button,
input,
optgroup,
select,
textarea {
    margin: 0;
    border: 0;
    font: inherit;
    color: inherit;
    outline: none;
    -webkit-appearance: none;
}





.all {
    width: 100%;
}

.w1200 {
    width: 1200px;
    margin: auto;
    overflow: hidden;
}

.left {
    float: left;
}

.right {
    float: right;
}

/* header */


main .w1200 {
    width: 1202px;
    background: #fff;
    margin-bottom: 35px;
}

#tabs_nav a.active{
    color:#1677ff;
    border-bottom: #3B89F6 2px solid;

}
.tw-list li a div:nth-child(3):hover{
    color:#6da9d5;
}

/*清除浮动*/

.cf:after {
    display: block;
    content: '';
    height: 0;
    visibility: hidden;
    clear: both;
}

.cf {
    zoom: 1;
}



.all .w1200 {
    /*padding:20px 0;*/
    /*text-align: center;*/
}

header {
    margin: 20px 0;
}

header nav {
    transform: translate(0, 50%);
}

/*菜单栏*/
nav ul li {
    float: left;
    font-weight: 600;
font-size: 16px;
text-align: center;
color: #3b89f6;
padding:0 42px;
height: 35px;
line-height: 35px;
}
nav ul li a{
    height: 30px;
    line-height: 30px;
    padding-bottom: 32px;
}

nav ul li a:hover{
    color:#3B89F6;
    border-bottom: #3B89F6 2px solid;
}
/*end 菜单栏*/

.img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.banner{
    position: relative;
    width: 100%;
    margin:auto;
}
.banner .text{
    position: absolute;
    width: 1200px;
    top: 40%;
    left: 0;
    left: 50%;
    transform: translate(-50%, 0);
}
.banner .text p{
    font-weight: 300;
font-size: 36px;
text-align: left;
color: #fff;
}
.banner .text span{
    font-weight: 300;
font-size: 20px;
text-align: left;
color: #fff;
}

.banner img {
    width: 100%;
    max-width: 1920px;
    height: 300px;
    margin: auto;
}


/*主体*/
.about-box .text{
    margin:30px 0;
}
.about-box .text li{
    float: left;
    width: 31.33%;
    margin-right:3%;
    text-align: center;
}
.about-box .text li:last-child{
    margin-right:0;
}
.text li .number{
    font-weight: 600;
font-size: 48px;
color: #3b89f6;
height: 68px;
line-height: 68px;
}

.text li span{
    font-weight: 400;
font-size: 24px;
text-align: center;
color: #333;
}
.text li .text-li span{
    color:#3b89f6;
    font-size: 22px;
}
/*图文*/
.tw-list ul li{
    float: left;
    width: 31.33%;
    margin-right:3%;
    text-align: center;
    margin-bottom: 30px;
}
.tw-list img{
    min-height: 190px;
}
.tw-list ul li:nth-child(3n){
    margin-right: 0;
}
.tw-list  .title{
    font-weight: 600;
font-size: 28px;
text-align: left;
color: #3b89f6;
padding:12px 0;
}
.tw-list .content{
    font-weight: 400;
font-size: 18px;
text-align: left;
color: #333;
}