zulip/web/styles/portico/footer.css

:root {
    --color-footer-background: hsl(238deg 28% 27%);
    --color-links: hsl(238deg 100% 82%);

    @media (prefers-color-scheme: dark) {
        --color-footer-background: hsl(238deg 28% 21%);
    }
}

#footer {
    background: var(--color-footer-background);
    box-sizing: border-box;

    & ul {
        /* Override bootstrap defaults */
        list-style: none;
        margin: 0;
    }

    .footer__container {
        max-width: 1132px;
        padding: 52px 52px 0;
        display: flex;
        justify-content: space-between;
        gap: 40px;
        flex-flow: row wrap;
        margin: 0 auto;
    }

    .footer__section {
        flex-shrink: 0;
    }

    .footer__section-title {
        display: block;
        font-style: normal;
        font-weight: 700;
        font-size: 18px;
        line-height: 133%;
        letter-spacing: 0.1em;
        color: hsl(0deg 0% 100%);
        opacity: 0.8;
        text-transform: uppercase;
        border-bottom: 0;
        margin-bottom: 0;
        margin-block-start: 0;
        margin-block-end: 0;
    }

    .footer__section ul {
        margin: 20px 0 28px;
        display: flex;
        flex-direction: column;
        align-items: flex-start;

        & li {
            margin-bottom: 10px;
        }
    }

    & li {
        font-style: normal;
        font-weight: 400;
        font-size: 16px;
        line-height: 20px;
        color: var(--color-links);
        border-bottom: 1px solid var(--color-footer-background);
        transition: border 0.4s ease-out;
    }

    & a,
    a:visited {
        font-weight: 400;
        font-size: 16px;
        color: var(--color-links);
    }

    & a:hover,
    a:focus {
        color: var(--color-links);
        border-bottom: 1px solid var(--color-links);
        transition: none;
        text-decoration: none;
        outline: none;
    }

    .footer__legal {
        margin: 12px 0 5px;
        padding: 0 52px;
        border-top: 1px solid hsl(0deg 0% 100% / 10%);

        & a {
            margin-bottom: 10px;
            border-bottom: 1px solid var(--color-footer-background);

            &:hover {
                border-bottom: 1px solid var(--color-links);
            }
        }

        &.footer__legal_not_corporate {
            margin-top: 0;
        }
    }

    .footer__legal-container {
        max-width: 1132px;
        padding-top: 15px;
        display: flex;
        justify-content: space-between;
        flex-flow: row wrap;
        margin: 0 auto;

        box-sizing: border-box;
        font-style: normal;
        font-weight: 400;
        font-size: 14px;
        line-height: 18px;
    }

    .footer__legal-spacer {
        flex-grow: 1;
    }

    .footer__legal-container .copyright {
        color: hsl(0deg 0% 100% / 50%);
        margin-bottom: 8px;
    }

    .footer__legal-container a {
        font-size: 14px;
        line-height: 18px;
    }

    .footer__legal-container a:not(:last-child) {
        margin-right: 2em;
    }

    .footer__section .extra_margin {
        margin-bottom: 40px;
    }

    /* #footer responsivity and global fixes */
    @media (width <= 940px) {
        .footer__container {
            justify-content: flex-start;
            row-gap: 0;
        }

        .footer__legal-container {
            justify-content: flex-end;
        }
    }

    @media (width <= 600px) {
        .footer__legal {
            padding: 0 10px;
        }

        .footer__legal-spacer {
            width: 100%;
        }

        .footer__legal-container {
            column-gap: 20px;
            justify-content: center;

            & a:not(:last-child) {
                margin-right: 0;
            }
        }
    }

    @media (width <= 400px) {
        .footer__container {
            gap: 0;
            flex-direction: column;
        }

        .footer__section .extra_margin {
            margin-bottom: 36px;
        }
    }
}