wagtail/client/scss/components/_forms.scss

// These are the generic stylings for forms of any type.
// If you're styling something specific to the page editing interface,
// it probably ought to go in layouts/page-editor.scss

// TODO: mixin,
// These these styles are currently in elements
// but the ones for the class should be here
//
// label,
// .label {
//     text-transform: none;
//     font-weight: bold;
//     color: $color-grey-1;
//     font-size: 1.1em;
//     display: block;
//     padding: 0 0 0.8em;
//     margin: 0;
//     line-height: 1.3em;
//
//     .checkbox &,
//     .radio & {
//         display: inline;
//     }
// }
.plain-checkbox-label {
    // cancel heavy / floated label styles, for labels that should appear inline against checkboxes

    float: none;
    color: inherit;
    font-weight: inherit;
    font-size: inherit;
}

// TODO: mixin,
// These these styles are currently in elements
// but the ones for the classes should be here
//
// input,
// textarea,
// select,
// .halloeditor,
// .tagit {
//     appearance: none;
//     box-sizing: border-box;
//     border-radius: 6px;
//     width: 100%;
//     font-family: Open Sans,Arial,sans-serif;
//     border: 1px solid $color-input-border;
//     padding: 0.9em 1.2em;
//     background-color: $color-fieldset-hover;
//     color: $color-text-input;
//     font-size: 1.2em;
//     font-weight: 300;
//
//     &:hover {
//         background-color: $color-white;
//     }
//
//     &:focus {
//         background-color: $color-input-focus;
//         border-color: $color-input-focus-border;
//     }
//
//     &:disabled,
//     &[disabled],
//     &:disabled:hover,
//     &[disabled]:hover {
//         background-color: inherit;
//         cursor: default;
//         color: $color-grey-4;
//     }
// }

// Reset the arrow on `<select>`s in IE10+.
select::-ms-expand {
    display: none;
}

// select boxes
.collection_choice_field .input,
.choice_field .input,
.model_choice_field .input,
.typed_choice_field .input {
    position: relative;

    // Add select arrow back on browsers where native ui has been removed
    select ~ span:after {
        border-radius: 0 6px 6px 0;
        z-index: 0;
        position: absolute;
        right: 0;
        top: 1px;
        bottom: 0;
        width: 1.5em;
        font-family: wagtail;
        content: map-get($icons, 'arrow-down');
        border: 1px solid $color-input-border;
        border-width: 0 0 0 1px;
        text-align: center;
        line-height: 1.4em;
        font-size: 3em;
        pointer-events: none;
        color: $color-grey-3;
        margin: 0 1px 1px 0;

        .ie & {
            display: none;
        }
    }

    // Override default select padding so the chevron will overlap with long option text
    select {
        padding-right: 5em;
    }
}

// Other text
.help,
.error-message {
    font-size: 0.85em;
    font-weight: normal;
    margin: 0.5em 0 0;
}

.error-message {
    color: $color-red;
}

.help {
    color: $color-grey-2;
}

fieldset:hover > .help,
.field.focused + .help,
.field:focus + .help,
.field:hover + .help,
li.focused > .help {
    opacity: 1;
}

.required .field > label:after,
label.required:after {
    content: '*';
    color: $color-red;
    font-weight: bold;
    display: inline-block;
    margin-left: 0.5em;
    line-height: 1em;
    font-size: 13px;
}

.error input,
.error textarea,
.error select,
.error .tagit {
    border-color: $color-red;
    background-color: $color-input-error-bg;
}

// Layouts for particular kinds of of fields

// permanently show checkbox/radio help as they have no focus state
.boolean_field .help,
.radio .help {
    opacity: 1;
}

// This is expected to go on the parent of the input/select/textarea
// so in most cases .input
.iconfield, // generic
.date_field,
.time_field,
.date_time_field,
.url_field {
    .input {
        position: relative;

        &:before,
        &:after {
            font-family: wagtail;
            position: absolute;
            top: 0.5em;
            line-height: 100%;
            font-size: 2em;
            color: $color-grey-3;
        }

        &:before {
            left: 0.3em;
        }

        &:after {
            right: 0.5em;
        }
    }

    input:not([type=radio]),
    input:not([type=checkbox]),
    input:not([type=submit]),
    input:not([type=button]) {
        padding-left: 2.5em;
    }

    // smaller fields required slight repositioning of icons
    &.field-small {
        .input {
            &:before,
            &:after {
                font-size: 1.3rem; // REMs are necessary here because IE doesn't treat generated content correctly
                top: 0.3em;
            }

            &:before {
                left: 0.5em;
            }

            &:after {
                right: 0.5em;
            }
        }
    }

    // special case for search spinners
    &.icon-spinner:after {
        color: $color-teal;
        opacity: 0.8;
        text-align: center;
        top: 0.3em;
    }
}

.date_field,
.date_time_field {
    .input:before {
        content: map-get($icons, 'date');
    }
}

.time_field {
    .input:before {
        content: map-get($icons, 'time');
    }
}

.url_field {
    .input:before {
        content: map-get($icons, 'link');
    }
}

.daterange_field {
    input:last-of-type {
        margin-top: 1.2em; // Mirrors the label 1.2em top padding.
    }
}

// This is specifically for model that are a generated set of checkboxes/radios
.model_multiple_choice_field .input li,
.choice_field .input li {
    label {
        display: block;
        width: auto;
        float: none;
        padding-top: 0; // Negates padding added to label for the group of fields as a whole
    }
}

.fields > li,
.field-col {
    @include clearfix();
    padding-top: 0.5em;
    padding-bottom: 1.2em;
}

.field-row {
    @include clearfix();

    // negative margin the bottom so it doesn't add too much space
    margin-bottom: -1.2em;
}

.input {
    clear: both;
}

// field sizing and alignment
.field-small {
    input,
    textarea,
    select,
    .halloeditor,
    .tagit {
        border-radius: 3px;
        padding: 0.4em 1em;
    }
}

.field {
    &.col1,
    &.col2,
    &.col3,
    &.col4,
    &.col5,
    &.col6,
    &.col7,
    &.col8,
    &.col9,
    &.col10,
    &.col11,
    &.col12 { clear: both;}
}

li.inline .field {
    &.col1,
    &.col2,
    &.col3,
    &.col4,
    &.col5,
    &.col6,
    &.col7,
    &.col8,
    &.col9,
    &.col10,
    &.col11,
    &.col12 { clear: none;}
}

// solve gutter issues of inline fields
ul.inline li:first-child,
li.inline:first-child {
    margin-left: -$grid-gutter-width / 2;
}


// search-bars
.search-bar {
    .required .field > label:after {
        display: none;
    }

    .button-filter {
        height: 2.71em;
        border-color: transparent;
    }
}

// file drop zones
.drop-zone {
    border-radius: 5px;
    border: 2px dashed $color-grey-4;
    padding: $mobile-nice-padding;
    background-color: $color-grey-5;
    margin-bottom: 1em;
    text-align: center;

    .drop-zone-help {
        border: 0;
    }

    &.hovered {
        border-color: $color-teal;
        background-color: $color-input-focus;
    }
}

// Transitions
.help {
    @include transition(opacity 0.2s ease);
}

.label-uppercase {
    .field > label {
        text-transform: uppercase;
    }
}

@include media-breakpoint-up(sm) {
    .help {
        opacity: 1;
    }

    .fields {
        max-width: 800px;
    }

    .field {
        @include row();
    }

    .field-content {
        @include column(10, 0);
    }

    .field-col {
        float: left;
        padding-left: 0;

        // anything less than 4 columns or greater than 6 is impractical
        &.col4 {
            label {
                @include column(2, 0, 4);
            }

            .field-content {
                @include column(2, $padding, 4);
                padding-left: 0;
            }
        }

        &.col6 {
            label {
                @include column(2, 0, 6);
            }

            .field-content {
                @include column(4, $padding, 6);
                padding-left: 0;
            }
        }
    }

    .label-above {
        .field > label,
        .field > .field-content {
            display: block;
            padding: 0 0 0.8em;
            float: none;
            width: auto;
        }
    }
}