.color-button{padding:10px;margin:5px;border:none;background-color:#d3d3d3;font-size:16px;cursor:pointer;transition:background-color .3s ease}.color-button:hover{background-color:#add8e6}.highlight{background-color:#ff0}.wrong-message{color:red;font-size:18px;font-weight:700;text-align:center}