html, body, p,span, div, a, ul,ol,li, h1, h2, h3, h4 {
    margin: 0;
    padding: 0;
}
*{
    box-sizing: border-box;
}
html, body {
    width: 100%;
    height: 100%;
	background-color: #f5f5f5;
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
img{
    width: 100%;
    display: block;
}
a:link{
    color: #000;
}
a:visited{
    color: #000;
}
.clear:after {
    display: block;
    clear: both;
    content: "";
    visibility: hidden;
    height: 0;
}