AI solution for CSS coding question on BFE.dev
19. color of input elements

input[type="range"] { appearance: none; height: 10px; width: 100%; background-color: #F44336; outline: none; opacity: 0.7; }

input[type="range"]::-webkit-slider-thumb { appearance: none; width: 20px; height: 20px; border-radius: 50%; background-color: white; cursor: pointer; }