.symbol-font {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: 100;
}

.subscript {
    position: relative;
    top: 0.3rem;
    font-size: 0.8rem;
}

.notation {
    display: block;
    font-style: italic;
    font-size: 1.3rem;
    background-color: var(--secondary-bg-color);
    padding: 1rem;
}

.summation-equation {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-family: serif;
}

.sum-container {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

.fraction-container {
    display: inline-flex;
    flex-direction: column;
}

.fraction-bar {
    background-color: var(--primary-fg-color);
    margin: 0.25rem;
    height: 1px;
    width: 100%;
}

.symbol { /* Summation symbol */
    font-size: 2.2rem;
}

.upper,
.lower {
    font-size: 0.8rem;
}

.lower {
    margin-top: 0.5rem;
}

@media (min-width: 800px) {

    .subscript {
        font-size: 1rem;
    }

    .notation {
        font-size: 2rem;
    }

}