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.u-relative, .u-rela { position: relative; }
.u-absolute, .u-abso { position: absolute; }
// nvue不能用标签命名样式,不能放在微信组件中,否则微信开发工具会报警告,无法使用标签名当做选择器
/* #ifndef APP-NVUE */ image { display: inline-block; }
// 在weex,也即nvue中,所有元素默认为border-box
view, text { box-sizing: border-box; } /* #endif */
.u-font-xs { font-size: 22rpx; }
.u-font-sm { font-size: 26rpx; }
.u-font-md { font-size: 28rpx; }
.u-font-lg { font-size: 30rpx; }
.u-font-xl { font-size: 34rpx; }
.u-flex { /* #ifndef APP-NVUE */ display: flex; /* #endif */ flex-direction: row; align-items: center; }
.u-flex-wrap { flex-wrap: wrap; }
.u-flex-nowrap { flex-wrap: nowrap; }
.u-col-center { align-items: center; }
.u-col-top { align-items: flex-start; }
.u-col-bottom { align-items: flex-end; }
.u-row-center { justify-content: center; }
.u-row-left { justify-content: flex-start; }
.u-row-right { justify-content: flex-end; }
.u-row-between { justify-content: space-between; }
.u-row-around { justify-content: space-around; }
.u-text-left { text-align: left; }
.u-text-center { text-align: center; }
.u-text-right { text-align: right; }
.u-flex-col { /* #ifndef APP-NVUE */ display: flex; /* #endif */ flex-direction: column; }
// 定义flex等分
@for $i from 0 through 12 { .u-flex-#{$i} { flex: $i; } }
// 定义字体(px)单位,小于20都为px单位字体
@for $i from 9 to 20 { .u-font-#{$i} { font-size: $i + px; } }
// 定义字体(rpx)单位,大于或等于20的都为rpx单位字体
@for $i from 20 through 40 { .u-font-#{$i} { font-size: $i + rpx; } }
// 定义内外边距,历遍1-80
@for $i from 0 through 80 { // 只要双数和能被5除尽的数
@if $i % 2 == 0 or $i % 5 == 0 { // 得出:u-margin-30或者u-m-30
.u-margin-#{$i}, .u-m-#{$i} { margin: $i + rpx!important; } // 得出:u-padding-30或者u-p-30
.u-padding-#{$i}, .u-p-#{$i} { padding: $i + rpx!important; } @each $short, $long in l left, t top, r right, b bottom { // 缩写版,结果如: u-m-l-30
// 定义外边距
.u-m-#{$short}-#{$i} { margin-#{$long}: $i + rpx!important; } // 定义内边距
.u-p-#{$short}-#{$i} { padding-#{$long}: $i + rpx!important; } // 完整版,结果如:u-margin-left-30
// 定义外边距
.u-margin-#{$long}-#{$i} { margin-#{$long}: $i + rpx!important; } // 定义内边距
.u-padding-#{$long}-#{$i} { padding-#{$long}: $i + rpx!important; } } } }
// 重置nvue的默认关于flex的样式
.u-reset-nvue { flex-direction: row; align-items: center; }
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