.visual-math-input-field {
    background: #fcfcfc;
    border: 1px solid #bbb;
    min-height: 32px;
    max-width: 100%;
    min-width: unset;
    padding: 8px;
}

@media (min-width: 768px) {
    .visual-math-input-field {
        background: #fcfcfc;
        border: 1px solid #bbb;
        min-width: 320px;
        min-height: 32px;
        width: unset;
        max-width: 100%;
        padding: 8px;
    }
}

.visual-math-input-controls {
    width: 90%;
    margin-bottom: 2px;
}

.visual-math-input-control {
    display: flex;
    justify-content: center;
    align-items: center;
    outline: none;
    cursor: pointer;
    border: none;
    margin: 0;
    padding: 0;
    min-width: 40px;
    min-height: 40px;
    font-size: 1.2em;
    font-family: Symbola, 'Times New Roman', serif;
}

.visual-math-input-control sup,
.visual-math-input-control sub {
    font-size: 0.5em;
}