body{ background: #98fb98; color: #000000; } h2{ background-color: #006400; color: #ffffff; border-style: outset; font-size: 40px; } h3{ background-color: #228b22; color: #ffffff; border-style: groove; font-size: 25px; } ul {margin-left: 1em;} li {list-style-image: url("pai/btn1.png");} li:hover {list-style-image: url("pai/btn2.png");} li:active {list-style-image: url("pai/btn3.png");}