a, article, aside, b, body, button, dd, div, dl, dt, figcaption, figure, footer, h1, h2, h3, h4, h5, h6, header, i, input, li, nav, p, section, select, span, textarea, ul {
    padding: 0;
    margin: 0;
    list-style: none;
    font-style: normal;
    text-decoration: none;
    border: none;
    font-family: Microsoft Yahei,sans-serif;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
}

.teach_step{
	margin-top:10px;
}
.teach_step h2{
	margin-left: 20px;
}
.teach_step h4{
	margin-left: 35px;
}
.fix{
	border-top: 1px solid #777;
	margin-top: 20px;
	padding-top:20px;
}
.fix h4{
	margin-left: 20px;
	display: block;
	position: relative;
	width: 70%;
}
.fix p{
	margin-top: 5px;
	margin-left: 20px;
	margin-right: 20px;
	line-height: 1.4rem;
    font-size: 0.9rem;
}
.fix p a{
	color: red;
}
.teach_step a{
	display: block;
	margin:15px auto;
	position: relative;
	width: 80%;
	text-align: center;
	height: 50px;
	line-height: 50px;
	background: #409eff;
	box-shadow: 0 5px 10px -5px #409eff;
	border-radius:5rem;
	color: #fff;
	text-decoration: none;
}
.teach_step p{
	margin-left: 35px;
	margin-top:15px;
	font-size:.9rem;
	width: 80%;
}
.teach_step b{
	margin-bottom:15px;
}
.teach_step .last{
	margin:10px 0px;
	text-align: center;
	font-weight: bold;
	font-size: 16px;
	width: auto;
}
.teach_step .attention{
	color:rgb(153, 153, 153);
}