.elea-postcode-wrap input[name="_postcode"] {
    width: 100%;
    box-sizing: border-box;
}
.elea-postcode-help {
    display: block;
    margin-top: 6px;
    font-size: 0.9em;
}
.elea-postcode-help.is-error {
    color: #b32d2e;
}
.elea-postcode-help.is-ok {
    color: #217a3c;
}