How to handle evens in put with React

Issue #661

Use Bulma css

<input
    class="input is-rounded"
    type="text"
    placeholder="Say something"
    value={value}
    onChange={(e) => { onValueChange(e.target.value) }}
    onKeyDown={(e) => {
        if (e.key === 'Enter') {
            onSend(e)
        }
    }}
/>