Here is the final code I added to my custom CSS:
element {background: rgba(246, 182, 177, 0.45); border-radius: 16px; box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1); backdrop-filter: blur(4.9px); -webkit-backdrop-filter: blur(4.9px); border: 1px solid rgba(246, 182, 177, 0.6);}