add method
Implementation
EdgeInsetsCSS add(EdgeInsetsCSS other) => EdgeInsetsCSS.only(
left: left + other.left,
top: top + other.top,
right: right + other.right,
bottom: bottom + other.bottom,
);
EdgeInsetsCSS add(EdgeInsetsCSS other) => EdgeInsetsCSS.only(
left: left + other.left,
top: top + other.top,
right: right + other.right,
bottom: bottom + other.bottom,
);