nav{
	position: fixed;
	height: 1rem;
	left: 0;
	right: 0;
	bottom: 50px;
	z-index: 9999999999999999999999999;
	background-color: white;
	box-shadow: 0 0px 5px red

}
nav ul li{
	display: block;
	float: left;
	width: 20%;
	padding-top: 0.22rem;
}
nav ul li img{
	display: block;
	margin-top: 0.22rem;
	height: 0.4rem;
	margin: 0 auto;
}
nav ul li:nth-child(3) img{
	display: block;
	height: 0.6rem;
    margin-top: 0.2rem;
	
}
nav ul li:nth-child(3){
	

	
	
}
nav ul li p{
	text-align: center;
}
@media screen and (max-width: 750px) {
    html{font-size:100px;}
}
@media screen and (max-width: 640px) {
    html{font-size: 96.1538px;}
}
@media screen and (max-width: 414px) {
    html{font-size: 82.0513px;}
}
@media screen and (max-width: 375px) {
    html{font-size: 53.0769px;}
}
@media screen and (max-width: 320px) {
    html{font-size: 48.0769px;}
}