.body{
    width: 100%;
    margin-top: 20p0x;
    margin-bottom: auto;
}
.bood{
    width: 100%;
    height: auto;
    position: fixed;
    top: 0;
    text-align: center;
    font-size: 10px;
    text-decoration: none;
}
.active{
    width: 100%;
    position: relative;
    height: auto;
    padding: 1px;
    border-top: #111;
    margin-bottom: -5px;
    margin-top: -3px

}