body{
    background: #f8f8f9;
}
header{
    color: #999;
    font-size: 0.72rem;
    line-height: 1;
    text-align: center;
    padding: 0.6rem 0;
}
main form{
    display: flex;
    flex-direction: column;
    align-items: center;
}
main input{
    color: #333;
    width: 6rem;
    border-radius: 5px;
    background: #fff;
    border: 1px solid #ccc;
    font-size: 0.36rem;
    line-height: 1;
    padding: 0.3rem;
    margin-bottom: 0.5rem;
}
.login{
    width: 6rem;
    height: 1rem;
    /* margin: 0 auto; */
    padding: 0.3rem;
    font-size: 0.4rem;
    line-height: 1;
    color: #fff;
    border-radius: 5px;
    background-color: #009900;
    border: 1px solid #009900;
    outline: none;

}