body { color: #dddddd; background-color: #222222; } .mcj-format-option { border-color: white; border-radius: 5px; border-width: 2px; border-style: solid; background-color: transparent; text-align: center; cursor: pointer; transition-duration: 0.4s; } .mcj-format-option:hover { background-color: white; color: black; } .mcj-format-option.active { background-color: white; color: black; }