background-image: radial-gradient(circle at right top, whitesmoke, whitesmoke 10px, transparent 11px),
radial-gradient(circle at left top, whitesmoke, whitesmoke 10px, transparent 11px),radial-gradient(circle at right bottom, whitesmoke, whitesmoke 10px, transparent 11px),radial-gradient(circle at left bottom, whitesmoke, whitesmoke 10px, transparent 11px)
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