.header {
    background-color: white;
    margin-bottom: 10px;
    padding-right: 0px;
    padding-left: 0px;
    margin-left: 0px;
    margin-right: 0px;
}

    .header .row:first-child {
        margin-left: 0px;
        margin-right: 0px;
    }

        header .row .col-12:first-child {
            padding-left: 0px;
            padding-right: 0px;
        }