ant-design/style/components/form.less

@import "../mixins/index";
@btnClass: ~"@{css-prefix}btn";

.reset-form();

label {
  position: relative;
  &[required]:before {
    position: absolute;
    display: inline-block;
    left: ~"-5px \9"; // ie8-9
    content: "*";
    color: @label-required-color;
    font-family: SimSun;
    font-size: @font-size-base;
    .translate3d(-10px; 0; 0);
  }

  > .@{iconfont-css-prefix} {
    vertical-align: top;
    font-size: @font-size-base;
  }
}

// Form items
// You should wrap labels and controls in .@{css-prefix}form-item for optimum spacing
.@{css-prefix}form-item {
  margin-bottom: @form-item-margin-bottom;

  label {
    color: @label-color;
    text-align: right;
    padding-right: 8px;
  }
}

// Input styles
.@{css-prefix}input {
  .input;
}

//== Input type: with extra icon
.has-feedback {
  .input-with-icon();
}

//== Style for input-group: input with label, with button or dropdown...
.@{css-prefix}input-group {
  .input-group(~"@{css-prefix}input"; @btnClass)
}

// 表单下的输入框尺寸唯一: 大尺寸
form {
  .has-feedback {
    .@{iconfont-css-prefix} {
      .square(@input-height-lg);
      line-height: @input-height-lg;
    }
  }
  .@{css-prefix}input,
  .@{css-prefix}input-group .@{css-prefix}input,
  .@{css-prefix}input-group .@{css-prefix}input-group-addon,
  .@{css-prefix}input-group .@{css-prefix}input-group-btn .@{btnClass} {
    height: @input-height-lg;
    font-size: @font-size-base;
    padding: @input-padding-horizontal;
  }
  
  // input[type=file]
  .@{css-prefix}upload {
    padding-top: 7px;
    padding-bottom: 7px;
    max-height: 32px;
    font-size: @font-size-base;
    background: transparent;
  }
}

// Radio & Checkbox
.@{css-prefix}radio,
.@{css-prefix}checkbox {
  position: relative;
  display: block;
  margin-top: 10px;
  margin-bottom: 10px;
  height: @input-height-lg;

  label {
    min-height: @line-height-computed;
    padding: 7px 0 7px 20px;
    margin-bottom: 0;
    font-weight: normal;
    cursor: pointer;
  }
}
.@{css-prefix}radio input[type="radio"],
.@{css-prefix}radio-inline input[type="radio"],
.@{css-prefix}checkbox input[type="checkbox"],
.@{css-prefix}checkbox-inline input[type="checkbox"] {
  position: absolute;
  margin-left: -20px;
  margin-top: 4px \9;
}

.@{css-prefix}radio + .@{css-prefix}radio,
.@{css-prefix}checkbox + .@{css-prefix}checkbox {
  margin-top: -5px;
}

// Radios and checkboxes on same line
.@{css-prefix}radio-inline,
.@{css-prefix}checkbox-inline {
  position: relative;
  display: inline-block;
  padding: 7px 20px;
  padding-right: 0!important;
  margin-bottom: 0;
  margin-right: 10px;
  vertical-align: middle;
  font-weight: normal;
  cursor: pointer;
}

input[type="radio"],
input[type="checkbox"] {
  &[disabled],
  &.disabled,
  fieldset[disabled] & {
    cursor: @cursor-disabled;
  }
}
// These classes are used directly on <label>s
.@{css-prefix}radio-inline,
.@{css-prefix}checkbox-inline {
  &.disabled,
  fieldset[disabled] & {
    cursor: @cursor-disabled;
  }
}
// These classes are used on elements with <label> descendants
.@{css-prefix}radio,
.@{css-prefix}checkbox {
  &.disabled,
  fieldset[disabled] & {
    label {
      cursor: @cursor-disabled;
    }
  }
}

// Form layout
//== Horizontal Form
.@{css-prefix}form-horizontal {
  .@{css-prefix}form-item {
    .make-row;
  }

  .@{css-prefix}radio,
  .@{css-prefix}checkbox,
  .@{css-prefix}radio-inline,
  .@{css-prefix}checkbox-inline {
    margin-top: 0;
    margin-bottom: 0;
  }

  .@{css-prefix}radio,
  .@{css-prefix}checkbox {
    min-height: (@line-height-computed + (@input-padding-vertical-base + 1));
  }
}

//== Inline Form
// Attention: Inline form does only apply to within viewports that are at least 768px wide
// TODO: 优化
.@{css-prefix}form-inline {
  @media (min-width: @screen-sm-min) {
    .@{css-prefix}form-item {
      display: inline-block;
      margin-bottom: 0;
      vertical-align: middle;
      margin-right: 10px;

      label {
        padding-right: 0;
      }
    }

    .@{css-prefix}input {
      display: inline-block;
      width: auto;
      vertical-align: middle;
    }

    .@{css-prefix}form-text {
      display: inline-block;
    }

    .has-feedback {
      display: inline-block;
    }

    .@{css-prefix}radio,
    .@{css-prefix}checkbox {
      display: inline-block;
      margin-top: 0;
      margin-bottom: 0;
      vertical-align: middle;

      label {
        padding-left: 0;
      }
    }
    .@{css-prefix}radio input[type="radio"],
    .@{css-prefix}checkbox input[type="checkbox"] {
      position: relative;
      margin-left: 0;
    }
  }
}

.@{css-prefix}form-horizontal, .@{css-prefix}form-inline {
  label {
    padding-top: 7px;
    padding-bottom: 7px;
  }
}

.@{css-prefix}form-text, .@{css-prefix}form-split {
  // min-height: (@line-height-computed + @font-size-base);
  margin: 0!important;
  padding-top: 7px;
  padding-bottom: 7px;
  font-size: @font-size-base;
  height: @input-height-lg;
}

.@{css-prefix}form-split {
  text-align: center;
}

// Validation state
.has-success {
  .form-control-validation(@success-color; @input-hover-border-color;);
  .@{css-prefix}input {
    border-color: @input-border-color;
  }
}
.has-warning {
  .form-control-validation(@warning-color; @warning-color;);
}
.has-error {
  .form-control-validation(@error-color; @error-color;);
}
.@{css-prefix}form-explain {
  display: block;
  font-size: @font-size-base;
}