.prefill-dark {
    font-size: 18px;
    background-color: #2b7367;
    border: none;
    color: #fff;
    padding: 1em;
    cursor: pointer;
    outline: none;
    border-radius: 1em;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-family: Noto Sans SC, Arial, Helvetica, sans-serif;
    margin-bottom: 1em;
    margin-top: 1em;
    background: #2b7367
      url(https://eform.cefs.gov.hk/form/common/images/icon-dark.cdc13c0d0ec3736e1ef1545f5f662df6.png)
      no-repeat 5% 50%;
}
.prefill-dark:focus,
.prefill-dark:hover {
    background: #256c5f
      url(https://eform.cefs.gov.hk/form/common/images/icon-dark.cdc13c0d0ec3736e1ef1545f5f662df6.png)
      no-repeat 5% 50%;
}
.prefill-buttontext {
    padding-left: 2em;
    overflow: hidden;
    display: block;
    text-overflow: ellipsis;
}
.prefill-color {
    padding: 0.5em 0 0.1em 20px;
    background: url("../images/iamsmart-icon-color.png") no-repeat;
    background-size: contain;
}