.boxtwitter{
	position: relative;
	float:left;
	width: 100%;
	height: 490px;
	overflow:hidden;
	text-align: left;
	box-sizing: border-box;
	background: #292F33;
	text-align: center;
}
.boxtwitter a{
	padding: 5px 0px;
}
.boxtwitter_kiri{
	margin-left: 10px;
}
@media only screen and (max-width: 900px) {
	.boxtwitter{
		width: 100%;
		margin-top: 10px;
	}
	.boxtwitter_kiri{
		margin-left: 0px;
	}
}