*{
    padding: 0;
    margin: 0;
}
a{
    text-decoration: none;
    color: #000;
}
footer{
    background-color: #fff;
    position: fixed;
    bottom: 0;
    width: 100%;
}
.fd{
    border-top: 1px solid #ccc;
    height: 50px;
    display: flex;
    margin-bottom: 10px;
}
.fd>div{
    width: 25%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.fd div a{
    width:100%;
    font-size: 15px;
    text-align: center;
    font-weight: bold;
    color: #333;
}
.fd>div>a i{
    font-size: 18px;
}