By default, the View component in React Native has its display property set to flex. Flex is a CSS property used to expand and shrink components dynamically based on available space. Setting flex: 1 on a component makes it take up all the available space. If a parent element has flex: 1, its child elements will evenly distribute the available space among themselves.
The width of a child element can be adjusted by assigning it a higher flex value; the larger the value, the more space the component will take relative to its siblings. However, for a component to expand, its parent must have dimensions greater than zero. If the parent element’s dimensions are not set, the flex property will not work, and the element will not be visible on the UI.
In addition to the flex property, align-items and justify-content CSS properties are also used to design mobile UIs in React Native.
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