.header{
    background-color: #fff;
    height: 60px;
    border-bottom: 1px solid #cccccc;
    display: flex;
    align-items: center;
    padding: 0 20px;
    position: fixed;
    top: 0px;
    width: 100%;
    z-index: 9;
    display: none;
}
@media only screen and (max-width: 1150px) {
    .header{
        display: flex;
    }
}