CSS

.toolbar {
    position: fixed;
    height: 56px;
    width: 100%;
    top: 0;
    left: 0;
    background: #000000;
    z-index: 1;
}

.toolbar_logo {
    margin-left: 1rem;
}

.toolbar_logo a {
    color: white;
    text-decoration: none;
    font-size: 1.8rem;
    font-family: serif;
}

.toolbar_logo center {
    color: white;
    text-decoration: none;
    font: .5rem;
    margin-bottom: 10px;
    font-family: sans-serif;
    font-style: italic;
}

.toolbar_navigation {
    display: flex;
    height:100%;
    align-items: center;
    padding: 0 1rem;
    font-family: serif;
}

.toolbar_navigation-items ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.toolbar_navigation-items li {
    padding: 0 0.5rem;
}

.toolbar_navigation-items a {
    color:white;
    text-decoration: none;
    font-family: sans-serif;
}

.spacer { /* accounts for free space when the screen size changes */
    flex: 1;
}

.toolbar_navigation-items a:hover,
.toolbar_navigation-items a:active {
    color: orange;
}

/* colored bar */
table {
    border-collapse: collapse;
    z-index: -1;
}
td {
    width: 100px;
    height: 20px;
    padding: 0px;
}
.colorbar_color1 {
    background-color: rgb(255, 217, 0);
}
.colorbar_color2 {
    background-color: red;
}
.colorbar_color3 {
    background-color: rgb(0, 140, 255);
}
.colorbar_color4 {
    background-color: gray;
}

/* mobile view */
@media (max-width: 768px) {
    .toolbar_navigation-items {
        display: none;
    }

    .toolbar_logo a {
        font-size: 1.2rem;
    }
}

/* desktop view */
@media (min-width: 769px) {
    .toolbar {
        /* might use */
    }

    .toolbar-toggle-button {
        display:none;
    }

    .toolbar_logo {
        margin-left: 0;
    }
}