.checkout #billing_phone_field {
    float: left;
    width: 48%;
}
.checkout #billing_phone_type_field {
    float: right;
    width: 48%;
}
.checkout select#billing_phone_type {
    display: block;
    width: 100%;
}
.checkout .student-table {
    margin-bottom: 25px;
    border: 1px solid;
}
.checkout .student-table tr {
    border-bottom: 1px solid;
}
.checkout .student-table tr:last-child {
    border-bottom: 0;
}
.checkout .student-table tr td {
    border-right: 1px solid;
    padding: 15px;
}
.checkout .student-table tr td:last-child {
    border-right: 0;
}