background: linear-gradient(91deg,#f1eefc,#9dc6ff 70%,#a5bcff);（body背景色）background: linear-gradient(135deg,#56c8ff,#6f99fc) no-repeat;（button背景色）
background:linear-gradient(to right, #bb313e25, #bb313e25, #d7222925, #dd4a1625, #e4761525, #f5c50025, #f0e92725, #b1ce2425, #48a93525, #03944525, #157c4f25, #176a5825, #1b556325, #1d386f25, #1d386f25, #20277825, #52266325, #8a244b25);