nav ul {
	margin: 0;
	padding: 0;
	list-style-type: none;
	width: 100%;
	/*	高さ変える場合ここを変更　*/
	height: 40px;
	line-height: 40px;
}
nav ul li {
    float: left;
    width: 150px;
    text-align: center;
    box-sizing: border-box;
    padding: 0;
    background-color: #7D7F2C;
    display: block;
}
nav li a {
    background-color: #7B152C;
    display: block;
}
ul li a:hover {
    background-color: #648D00;
}
.sub{
    position: absolute;
    z-index: 100;
    width: 150px;
    display: none;
}