#nav_area{
	position: fixed;
	left: 0;
	top: 80px;
	width: 20%;
	min-height: 100vh;
	z-index: 9999999;
	background-color: #d3381c;
	transition: .5s;
}

.nav_sns_logo{
	position: relative;
}

.nav_area_li{
	padding: 20px;
}

#nav_area nav{
	margin: 0 auto;
	width:-moz-fit-content; /* Firefox */
  	width:fit-content; /* other browsers */
}

#nav_sns_area{
	margin-top: 20px;
	width: 70%;
}

.sns_div_area_child{
	position: absolute;
	top: 18px;
 	left: 56px;
  	font-size: 12px;
}