page-header {
    width: 100%;
    background-color: steelblue;
    color: white;
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    flex-wrap: wrap;
}

page-header *::selection {
    background-color: fuchsia;
}

page-header a {
    color: white;
    padding: 10px;
    display: inline-block;
}

page-header .title {
    display: inline-block;
    padding: 10px;
    color: #afcee8;
}

page-header .user,
page-header .user form {
    display: flex;
    align-items: baseline;
    padding-left: 10px;
}

page-header .user input {
    max-width: 100px;
    font-size: inherit;
}

page-header .user button {
    text-decoration: none;
    color: white;
    padding: 10px;
    display: inline-block;
    font-weight: bold;
    font-family: sans-serif;
    background-color: transparent;
    border: none;
    font-size: inherit;
    cursor: pointer;
}

page-header .user form.error {
    background-color: orangered;
}