Hello Dear,
I had transfer btc and 48hrs passed but still transaction unconfirmed. I made transaction dynamic fees but still unconfirmed.
78ed8ccd350e86ad53405440b2b7181a5411fa2b1ef6781686f18ff0890769cb
The problems is that you only added a very low fee - 70.272 sat/B, you should probably added a fee of around 160-180 sat/B for this transaction to clear within the next few blocks.
Because you said you are using Electrum (if it's the new version) then just use RBF (replace by fee) and add a higher fee to the transaction to help it get confirmed quicker.
In future check what the optimal fee is by looking at a site like this one:
https://bitcoinfees.21.co/Edit: It looks like you have an unconfirmed transactions in the same address from yesterday before you sent this transaction you are enquiring about now. The tx you have mentioned may have an unconfirmed output in it so that will have to confirm before the transaction you sent today will confirm.