*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
html,body{
    height: 100%;
    width: 100%;
}
a{
    text-decoration: unset;
}
.background{
    background: url(./img/ppp.jpg) no-repeat;
    background-size: cover;
    background-position: center;
    min-height: 100%;
    text-align: center;
}
.contact-box{
    width: 860px;
    margin: 40px auto 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.contact-item{
    display: flex;
    align-items: center;
}
.contact-item-id{
    margin-left: 8px;
}
.contact-item-id>div:nth-child(1){
    background: linear-gradient(180deg, #FFF 54.69%, #89CFFF 100%);
    font-size: 22px;
    margin-bottom: 10px;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.contact-item-id>div:nth-child(2){
    display: flex;
    margin: auto;
    align-items: center;
    justify-content: center;
}
.btn{
    display: block;
    height: 24px;
    line-height: 23px;
    border-radius: 20px;
    color: #fff;
    font-size: 14px;
    padding: 0 20px;
    transition: all 0.3s;
    cursor: pointer;
}
.btn:hover{
    opacity: .8;
}
.title{
    font-size: 23px;
    margin-top: 26px;
    color: white;
}
.web-box{
    display: flex;
    align-items: center;
    width: fit-content;
    margin: 26px auto 0 auto;
    background: rgba(46, 85, 212, 0.452);
    border-radius: 8px;
    font-size: 16px;
    color: white;
    padding: 0 20px;
    height: 50px;
}
.dot{
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin: 0 6px 0 18px;
}
.node-box{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    width: 720px;
    padding: 20px;
    background: rgba(0, 0, 0, .3);
    border-radius: 10px;
    box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
    margin: 40px auto 0 auto;
}
.node-item{
    width: 324px;
    height: 50px;
    background: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
    border-radius: 80px;
    margin-bottom: 20px;
}
.node-item-child{
    width: 33%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}
.node-item-child:nth-child(2){
    border-left: 1px solid #f0f0f0;
    border-right: 1px solid #f0f0f0;
    height: 100%;
}
.node-item-child-s{
    color: #4fd819;
    font-size: 20px;
}
.node-item-child-link{
    color: #000;
    height: 100%;
    font-size: 16px;
    background: linear-gradient(90deg, #58A7FB 0%, #58DEFB 100%);
}
.node-item-child-link:hover{
    opacity: .8;
}