.bf_sl{
	width: 950px;
	text-align: center;
	display: block;
	margin: 0 auto;
	margin-bottom: 100px;
}
@media screen and (min-width:2251px) {
.bf_sl{
	margin: 100px auto 0;
	display: block;
}
}
.bf_sl iframe{
	width: 100%;
	height: 435px;
	display: block;
	margin: 60px auto;
}

.bf{
	margin-bottom: 100px;
}

.bf_ambitious {
	background: #fffde5;
	width: 950px;
	text-align: center;
	position: relative;
	padding: 0 0 60px;
	margin: 120px auto 40px;
}
.bf_ambitious img {
	width: 100%;
	margin-top: -40px;
}
.bf_ambitious a {
	position: absolute;
    width: 380px;
    right: 6%;
    bottom: 27%;
}
.bf_ambitious a img {
	width: 100%;
	margin-top: 0;
}