.emailbox {max-width: 300px !important; background: #fff !important; }
.emailbox::placeholder { color: #c0c0c0 !important; }
.emailbox::-webkit-input-placeholder { color: #c0c0c0 !important; }
.emailbox:-moz-placeholder { color: #c0c0c0 !important; opacity: 1; }
.emailbox::-moz-placeholder { color: #c0c0c0 !important; opacity: 1; }
.emailbox:-ms-input-placeholder { color: #c0c0c0 !important; }