.header{
    position: fixed;
    display: flex;
    justify-content: space-between;
    width: 100%;
    height: 2.25rem;
    background: #fff;
    padding: 0px .8rem;
    box-sizing: border-box;
    align-items: center;
    border-bottom: 1px solid #f5f5f5;
    z-index: 999;
    overflow: hidden;
}
.right{
   
    color: #000;
    font-weight: 600;
}