.recaptcha-box {
position: relative;
display: block;
width: 100%;
max-width: 100%;
overflow: hidden; text-align: center; box-sizing: border-box;
margin: 0 auto;
}
.recaptcha-box .g-recaptcha,
.recaptcha-box iframe[title="reCAPTCHA"],
.recaptcha-box iframe[src*="recaptcha"] {
max-width: 100%;
width: 304px; height: auto;
transform-origin: center;
}