tellraw @s {"hoverEvent":{"action":"show_text","value":[{"text":"","color":"white"}]},"text":"==Menu=="}

tellraw @s {"bold":true,"clickEvent":{"action":"run_command","value":"/tag @s add ready_game"},"color":"red","hoverEvent":{"action":"show_text","value":[{"text":"When you are ready to start.","color":"white"}]},"text":"SELECT AND START"}