* {
    padding: 0;
    margin: 0;
}
button {
    border: none;
    outline: none;
}
body {
    font-family: "Microsoft YaHei";
}
.head{
    width: 100%;
    height: 80px;
    background: #ffffff;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2000;
    box-shadow: 0 1px 1px #f6f6f6;
}
.pad {
    width: 100%;
    height: 80px;
}
.head-cont{
    width: 1200px;
    height: 80px;
    line-height: 80px;
    margin: 0 auto;
}
.head-logo{
    float: left;
    width: 266px;
}
.head-logo img{
    width: 202px;
    height: 50px;
}
.head-tab{
    color: #333333;
    font-size: 18px;
    font-weight:400;
    float: right;
}
.head-tab a{
    display: inline-block;
    margin-left: 60px;
    height: 80px;
}
.active {
    color: #5E75E6;
}
a:hover{
    color: #5E75E6;
}
.positions-wrapper{
    position: relative;
}
.positions{
    
    position: absolute;
    top: 40px;
    left: 36px;
    background: #ffffff;
    width: 120px;
    border-radius: 6px;
    box-shadow: 0 0 2px #c1c1c1;
    display: none;
}
.positions a {
    text-align: center;
    margin-left: 0;
    display: block;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
}