he padding in the below code is correct in chrome and firefox, but not aligned in IE9.

.navigation_main ul li a {
    background-color: #FFFFFF;
    border-radius: 5px 5px 0 0;
    color: #003366;
    font-size: 13px;
    margin: 1.2px;
    padding: 5px;
}

the padding in the  above code is correct in chrome and firefox, but not aligned in IE9. 

hlp??????me..........