*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.header-logo {
    width: 100%;
    display: block;
}

.page-header {
    display: flex;
    padding: 28px 0;
    justify-content: center;
    background: #000;
}

.main-banner {
    width: 100%;
}