Included are: a plural-push information management unit; a screen attention degree determination unit; a selection operation history collection unit; a selection probability calculation unit calculating a user's selection probability for each category; and a display style determination unit causing pieces of push information in a category having a higher probability to be displayed in a more easily selectable display style. The categories include a relevance category including pieces of push information regarding content displayed on the screen. The selection probability calculation unit calculates a selection probability of the relevance category having a first attention degree as a screen attention degree to be higher than that having the second attention degree lower than the first attention degree; and calculates a selection probability having a first number as the number of selection times to be higher than that having a second number smaller than the first number.