.sns {
	display: flex;
	flex-direction: column; 
    justify-content: center;
    align-items: center;
    margin:auto;
}
.sns_item {
	display: flex;
	justify-content: center;
    align-items: center;
}
.sns h3{
	font-size: 1.8em;
	text-align: center;
}
.sns p{
	font-size: 1.4em;
}
.sns a{
	display: flex;
    justify-content: center;
    align-items: center;
	font-size: 1.5em;
	padding: 10px;
    margin:  5px;              /* 外側の余白 */
    border-radius:  5px;        /* 角丸指定 */
    width: 33%;                 /* 幅指定 */
    text-align: center;
    background: #f5f5f5;
    text-decoration: none;
}
.yoko {
	display: flex;
	flex-direction: row;
}

@media screen and (max-width: 768px) {
	.sns {
   		width: 100%;
    	flex-direction: column; 
	}
	.sns_item {
    	width: 90%;                 /* 幅指定 */
	}
	h2 {
		padding-top:50px;
	}
	.sns span{
		font-size: 1.2em;
	}
	.sns a{
		width: 90%;
	}
}