内外边距
/* -- 内外边距 -- */.margin-0 { margin: 0;}.margin-xs { margin: 5px;}.margin-sm { margin: 10px;}.margin { margin: 15px;}.margin-lg { margin: 20px;}.margin-xl { margin: 25px;}.margin-top-xs { margin-top: 5px;}.margin-top-sm { margin-top: 10px;}.margin-top { margin-top: 15px;}.margin-top-lg { margin-top: 20px;}.margin-top-xl { margin-top: 25px;}.margin-right-xs { margin-right: 5px;}.margin-right-sm { margin-right: 10px;}.margin-right { margin-right: 15px;}.margin-right-lg { margin-right: 20px;}.margin-right-xl { margin-right: 25px;}.margin-bottom-xs { margin-bottom: 5px;}.margin-bottom-sm { margin-bottom: 10px;}.margin-bottom { margin-bottom: 15px;}.margin-bottom-lg { margin-bottom: 20px;}.margin-bottom-xl { margin-bottom: 25px;}.margin-left-xs { margin-left: 5px;}.margin-left-sm { margin-left: 10px;}.margin-left { margin-left: 15px;}.margin-left-lg { margin-left: 20px;}.margin-left-xl { margin-left: 25px;}.margin-lr-xs { margin-left: 5px; margin-right: 5px;}.margin-lr-sm { margin-left: 10px; margin-right: 10px;}.margin-lr { margin-left: 15px; margin-right: 15px;}.margin-lr-lg { margin-left: 20px; margin-right: 20px;}.margin-lr-xl { margin-left: 25px; margin-right: 25px;}.margin-tb-xs { margin-top: 5px; margin-bottom: 5px;}.margin-tb-sm { margin-top: 10px; margin-bottom: 10px;}.margin-tb { margin-top: 15px; margin-bottom: 15px;}.margin-tb-lg { margin-top: 20px; margin-bottom: 20px;}.margin-tb-xl { margin-top: 25px; margin-bottom: 25px;}.padding-0 { padding: 0;}.padding-xs { padding: 5px;}.padding-sm { padding: 10px;}.padding { padding: 15px;}.padding-lg { padding: 20px;}.padding-xl { padding: 25px;}.padding-top-xs { padding-top: 5px;}.padding-top-sm { padding-top: 10px;}.padding-top { padding-top: 15px;}.padding-top-lg { padding-top: 20px;}.padding-top-xl { padding-top: 25px;}.padding-right-xs { padding-right: 5px;}.padding-right-sm { padding-right: 10px;}.padding-right { padding-right: 15px;}.padding-right-lg { padding-right: 20px;}.padding-right-xl { padding-right: 25px;}.padding-bottom-xs { padding-bottom: 5px;}.padding-bottom-sm { padding-bottom: 10px;}.padding-bottom { padding-bottom: 15px;}.padding-bottom-lg { padding-bottom: 20px;}.padding-bottom-xl { padding-bottom: 25px;}.padding-left-xs { padding-left: 5px;}.padding-left-sm { padding-left: 10px;}.padding-left { padding-left: 15px;}.padding-left-lg { padding-left: 20px;}.padding-left-xl { padding-left: 25px;}.padding-lr-xs { padding-left: 5px; padding-right: 5px;}.padding-lr-sm { padding-left: 10px; padding-right: 10px;}.padding-lr { padding-left: 15px; padding-right: 15px;}.padding-lr-lg { padding-left: 20px; padding-right: 20px;}.padding-lr-xl { padding-left: 25px; padding-right: 25px;}.padding-tb-xs { padding-top: 5px; padding-bottom: 5px;}.padding-tb-sm { padding-top: 10px; padding-bottom: 10px;}.padding-tb { padding-top: 15px; padding-bottom: 15px;}.padding-tb-lg { padding-top: 20px; padding-bottom: 20px;}.padding-tb-xl { padding-top: 25px; padding-bottom: 25px;}
flex弹性布局
.flex { display: flex;}.basis-xs { flex-basis: 20%;}.basis-sm { flex-basis: 40%;}.basis-df { flex-basis: 50%;}.basis-lg { flex-basis: 60%;}.basis-xl { flex-basis: 80%;}.flex-sub { flex: 1;}.flex-twice { flex: 2;}.flex-treble { flex: 3;}.flex-direction { flex-direction: column;}.flex-wrap { flex-wrap: wrap;}.align-start { align-items: flex-start;}.align-end { align-items: flex-end;}.align-center { align-items: center;}.align-stretch { align-items: stretch;}.self-start { align-self: flex-start;}.self-center { align-self: flex-center;}.self-end { align-self: flex-end;}.self-stretch { align-self: stretch;}.align-stretch { align-items: stretch;}.justify-start { justify-content: flex-start;}.justify-end { justify-content: flex-end;}.justify-center { justify-content: center;}.justify-between { justify-content: space-between;}.justify-around { justify-content: space-around;}