.mc-error {
    width: 20px;
}

/* Set everybody to the same box-sizing model, even though
 * the browsers' root stylesheets treat submit buttons as
 * content-box!
 */
.mc-signup input {
    -webkit-box-sizing: border-box;
    -moz-box-sizing:    border-box;
    box-sizing:         border-box;

}

.mc-signup input {
    display: block;
    width: 90%;
    padding: 5px;
}

.mc-signup input[type="email"],
.mc-signup input[type="submit"] {
    margin-top: 25px;
}