src/styles/components/color-picker.less

@color-picker-prefix-cls: ~"@{css-prefix}color-picker";
.@{color-picker-prefix-cls} {
    display: inline-block;
    & .@{select-dropdown-prefix-cls} {
        padding: 0;
    }
    &-rel{
        line-height: 0;
    }
    &-color{
        width: 18px;
        height: 18px;
        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAIAAADZF8uwAAAAGUlEQVQYV2M4gwH+YwCGIasIUwhT25BVBADtzYNYrHvv4gAAAABJRU5ErkJggg==);
        border-radius: 2px;
        position: relative;
        top: 2px;
        div{
            width: 100%;
            height: 100%;
            box-shadow: inset 0 0 0 1px rgba(0,0,0,.15);
            border-radius: 2px;
        }
        &-empty{
            background: #fff;
            overflow: hidden;
            text-align: center;
            i{
                font-size: 20px;
            }
        }
    }
    &-large &-color{
        width: 20px;
        height: 20px;
        top: 1px;
    }
    &-small &-color{
        width: 14px;
        height: 14px;
        top: 3px;
    }
    &-picker{
        &-wrapper{
            padding: 8px 8px 0;
        }
        &-panel{
            width: 240px;
            margin: 0 auto;
            box-sizing: initial;
            position: relative;
        }
        &-hue-slider, &-alpha-slider{
            height: 10px;
            margin-top: 8px;
            position: relative;
        }
        &-colors{
            margin-top: 8px;
            overflow: hidden;
            span{
                display: inline-block;
                width: 20px;
                height: 20px;
                float: left;
                em{
                    display: block;
                    width: 16px;
                    height: 16px;
                    margin: 2px;
                    cursor: pointer;
                    border-radius: 2px;
                    box-shadow: inset 0 0 0 1px rgba(0,0,0,.15);
                }
            }
        }
        .@{picker-prefix-cls}-confirm{
            margin-top: 8px;
        }
    }
    &-saturation{
        &-wrapper{
            width: 100%;
            padding-bottom: 75%;
            position: relative;
            overflow: hidden;
        }
        &, &--white, &--black{
            cursor: pointer;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
        }
        &--white{
            background: linear-gradient(to right, #fff, rgba(255,255,255,0));
        }
        &--black{
            background: linear-gradient(to top, #000, rgba(0,0,0,0));
        }
        &-pointer{
            cursor: pointer;
            position: absolute;
        }
        &-circle{
            width: 4px;
            height: 4px;
            box-shadow: 0 0 0 1.5px #fff, inset 0 0 1px 1px rgba(0,0,0,.3), 0 0 1px 2px rgba(0,0,0,.4);
            border-radius: 50%;
            transform: translate(-2px, -2px);
        }
    }
    &-hue{
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        border-radius: 2px;
        background: linear-gradient(to right, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);
        &-container{
            cursor: pointer;
            margin: 0 2px;
            position: relative;
            height: 100%;
        }
        &-pointer{
            z-index: 2;
            position: absolute;
        }
        &-picker{
            cursor: pointer;
            margin-top: 1px;
            width: 4px;
            border-radius: 1px;
            height: 8px;
            box-shadow: 0 0 2px rgba(0, 0, 0, .6);
            background: #fff;
            transform: translateX(-2px);
        }
    }
    &-alpha{
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        &-checkboard-wrap{
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            overflow: hidden;
            border-radius: 2px;
        }
        &-checkerboard{
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAIAAADZF8uwAAAAGUlEQVQYV2M4gwH+YwCGIasIUwhT25BVBADtzYNYrHvv4gAAAABJRU5ErkJggg==);
        }
        &-gradient{
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            border-radius: 2px;
        }
        &-container{
            cursor: pointer;
            position: relative;
            z-index: 2;
            height: 100%;
            margin: 0 3px;
        }
        &-pointer{
            z-index: 2;
            position: absolute;
        }
        &-picker{
            cursor: pointer;
            width: 4px;
            border-radius: 1px;
            height: 8px;
            box-shadow: 0 0 2px rgba(0, 0, 0, .6);
            background: #fff;
            margin-top: 1px;
            transform: translateX(-2px);
        }
    }
    &-confirm{
        position: relative;
        &-color{
            position: absolute;
            top: 11px;
            left: 8px;
        }
    }
}