.left-column-settings-page {
	float: left;
	width: 65%;
	width: calc(100% - 350px);
}

.right-column-settings-page {
	max-width: 306px;
	float: right;
}

.right-column-settings-page img {
	max-width: 100%;
}

.metabox-holder .postbox h3 {
	padding-left: 10px;
}

@media screen and (max-width: 640px) {

	.left-column-settings-page {
		width: 100%;
	}

	.right-column-settings-page {
		float: left;
		clear: both;
		margin-top: 10px;
	}
}