zoneminder/web/skins/classic/css/base/views/options.css

input.small {
    width: 6em;
}

input.medium {
    width: 9em;
}

input.large {
    width: 20em;
}

#contentTable.optionTable th, #contentTable.optionTable td {
    vertical-align: top;
}

#contentTable.userTable th, #contentTable.userTable td {
    text-align: center;
}

#contentTable.userTable .colMonitor, #contentTable.userTable .colUsername {
    text-align: left;
}
#contentTable th {
  text-align: left;
}

input[name="newConfig[ZM_OPT_GOOG_RECAPTCHA_SITEKEY]"],
input[name="newConfig[ZM_OPT_GOOG_RECAPTCHA_SECRETKEY]"] {
  width: 100%;
}

#options label {
  font-weight: bold;
}