.f{
				border-top-left-radius: 20%;
				border-bottom-left-radius: 20%;
			}
			.l{
				border-top-right-radius: 20%;
				border-bottom-right-radius: 20%;
			}
			.nav{
				width: 95%;
				position: fixed;
				bottom: 3px;
				margin-left: 10px;
			}
			.nav div{
				width: 25%;
				float: left;
				text-align: center;
				background-color: #26A3FF;
				height: 70px;
			}
			.nav div a{
				text-decoration: none;
			}
			.nav div a p{
				font-size: 25px;
				line-height: 55px;
				color:#551A8B;
			}
			.nav div a p span{
				display: block;
				font-size: 15px;
				position: relative;
				top: -30px;
				color: #fff;
			}