.jsmart-captcha {
    display: block; width: 160px; overflow: hidden;
    border: 1px solid; border-radius: 5px;
    cursor: pointer;
}
.jsmart-captcha img, .jsmart-captcha input {
    display: block; width: 160px;
    margin: 0; padding: 0; border: none;
}
.jsmart-captcha input {
    padding: 5px 10px; font-size: 18px;
}