layui-ul/source/components/nav/ul-nav-grid/_index.scss

.ul-nav-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: flex-start;

    .item {
        flex: 0 0 calc(100% / 3);
        text-align: center;
        margin-bottom: 12px;

        .icon {
            text-align: center;
        }

        .main {
            display: inline-block;
            padding: 6px;
        }
    }

    // 将背景颜色值定义成变量

    $colors:('red': #FF6961,
        'orange': #FFA07A,
        'yellow': #FF69B4,
        'green': #2ECC71,
        'bluegreen': #1ABC9C,
        'blue': #3498DB,
        'purple': #AF7AC5,
    );



    &.colord {

        @each $colorKey,
        $color in $colors {
            .item.#{$colorKey} {
                .icon {
                    color: $color;
                }
            }

        }

    }

    &.colord-bg {

        @each $colorKey,
        $color in $colors {
            .item.#{$colorKey} {
                .icon {
                    color: #fff;

                    .main {
                        background-color: $color;
                        border-radius: 50%;
                    }
                }
            }
        }
    }

    &.box {
        background-color: #eee;
        padding: 0.5px;

        .item {
            flex: 0 0 calc(100% / 3 - 1px - 24px);
            margin: 0.5px;
            background-color: #fff;
            padding: 12px;
        }
    }
}