@media screen and (min-width: 850px) {

.header_inner {
    position: fixed; /* 固定 */
    top: 0; /* 一番上に表示 */
    width: 100%; /* 中央に表示 */
	
	/* Permalink - use to edit and share this gradient: https://colorzilla.com/gradient-editor/#000000+0,000000+100&0.6+0,0+100 */
	background: -moz-linear-gradient(top,  rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 100%); /* FF3.6-15 */
	background: -webkit-linear-gradient(top,  rgba(0,0,0,0.5) 0%,rgba(0,0,0,0) 100%); /* Chrome10-25,Safari5.1-6 */
	background: linear-gradient(to bottom,  rgba(0,0,0,0.5) 0%,rgba(0,0,0,0) 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#99000000', endColorstr='#00000000',GradientType=0 ); /* IE6-9 */


	
     /* background-color: rgba(77, 154, 176, 0.8); 背景色 */
    z-index: 10000;
    height: 80px;
}

.menu_header_top{
background-color:rgba(77,154,176, 0.8)}
	
}