style.css

:root {
    --header-color: #393939;
    --back-color: #141516;
    --page-color: #181a1b;
    --link-color: #946dec;
    --text-color: #e8e6e3;
    --pad-size: 20%;
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

html {
    background-color: var(--page-color);
    font-size: large;
}

body {
    color: lightgray;
    background-color: var(--back-color);
    padding-left: 1em;
    padding-right: 1em;
    min-width: 800px;
    margin-left: var(--pad-size);
    margin-right: var(--pad-size);
    padding-top: 0.5em;
    padding-bottom: 0.5em;
    min-height: calc(100vh - 2em);
    display: flex;
    flex-direction: column;
}

nav, h1, h2, h3 {
    padding-left: 1em;
    background-image: linear-gradient(to right, var(--header-color) 50%, var(--back-color));
    margin-right: 1%;
    margin-top: 0px;
    margin-bottom: 2px;
}

nav {
    padding: 10px;
}

nav a {
    color: var(--text-color);
    background-color: rgba(0, 0, 0, 0.5);
    padding: 5px;
}

nav a:hover {
    text-decoration: none;
    background-color: rgba(0, 0, 0, 0.2);
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

footer {
    text-align: center;
    padding: 3px;
    background-color: rgba(0,0,0,0.3);
    color: white;
    margin-top: auto;
    font-size: small;
}

/* Hotizontal Labels */
#chart_div svg g:nth-child(3) text {
    fill: var(--text-color);
}

/* Rows Odd */
#chart_div svg g:nth-child(3) rect:nth-child(odd) {
    fill: rgba(0, 0, 0, 0.1);
}

/* Rows Even */
#chart_div svg g:nth-child(3) rect:nth-child(even) {
    fill: transparent;
}