antd/lib/style/core/base.less

An enterprise-class UI design language and React components implementation

// Config global less under antd
[class^=~'@{ant-prefix}-'],
[class*=~' @{ant-prefix}-'] {
  // remove the clear button of a text input control in IE10+
  &::-ms-clear,
  input::-ms-clear,
  input::-ms-reveal {
    display: none;
  }
}