My 5 month old is real sassy. She also throws the craziest tantums time to time. Yesterday was…

My 5 month old is real sassy. She also throws the craziest tantums time to time. Yesterday was probably the worst one...We were fishing and it started to get dark so I carried my daughter to the car. I put her in her car seat and she started growling and trying to throw herself back. I continued to buckle her in, she yelled and kicked like crazy. For an hour she flipped out. Screaming, growling, yelling..She had he most angry expression on her face. I thought she'd bust a blood vessel! I don't want this behavior to get worse or continue...how would I start to correct a 5 month old? Do I just ignore it? Put her to bed or timeout?