h1 {text-align: center;}

table, tr, td, th {border: 1px solid}
th, td {text-align: center;
        width: 150px;
	height: 50px}
th {font-size: 20px;}
td.joho {color: green;
	 font-weight: bold;}
th {background-color: aqua;}
table {margin-left: auto;
       margin-right: auto;}

ul {margin-left: 20px;}
li {list-style-image: url("1.png");}
li:hover {list-style-image: url("2.png");}
li:active {list-style-image: url("3.png");}