/* =============================== 定位布局 */
.position-fixed    { position: fixed; }
.position-sticky   { position: sticky; }
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.fl { float: left; }  .fr { float: right; }
.tl { text-align: left; }  .tc { text-align: center; }  .tr { text-align: right; }

/* =============================== 弹性盒子布局 */
.fboxRow  { display: flex; flex-direction: row; }
.fboxCol  { display: flex; flex-direction: column; }
.fboxWrap { display: flex; flex-wrap: wrap; }
.flex1 { flex: 1; }  .flex2 { flex: 2; }  .flex3 { flex: 3; }

.Xstart   { justify-content: flex-start; }
.Xcenter  { justify-content: center; }
.Xend     { justify-content: flex-end; }
.Xbetween { justify-content: space-between; }
.Xaround  { justify-content: space-around; }

.Ystart    { align-items: flex-start; }
.Ycenter   { align-items: center; }
.Yend      { align-items: flex-end; }
.Ybaseline { align-items: baseline; }
.Ystretch  { align-items: stretch; }

/* =============================== margin */
.mt-0 { margin-top: 0; }     .mt-10 { margin-top: 10px; }   .mt-15 { margin-top: 15px; }
.mt-16 { margin-top: 16px; } .mt-20 { margin-top: 20px; }   .mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.ml-0 { margin-left: 0; }    .ml-10 { margin-left: 10px; }  .ml-15 { margin-left: 15px; }
.ml-20 { margin-left: 20px; } .ml-30 { margin-left: 30px; } .ml-40 { margin-left: 40px; }
.mr-0 { margin-right: 0; }   .mr-10 { margin-right: 10px; } .mr-15 { margin-right: 15px; }
.mr-20 { margin-right: 20px; } .mr-30 { margin-right: 30px; } .mr-40 { margin-right: 40px; }
.mb-0 { margin-bottom: 0; }  .mb-10 { margin-bottom: 10px; } .mb-15 { margin-bottom: 15px; }
.mb-20 { margin-bottom: 20px; } .mb-30 { margin-bottom: 30px; } .mb-40 { margin-bottom: 40px; }

/* =============================== padding */
.pt-10 { padding-top: 10px; }    .pt-20 { padding-top: 20px; }
.pt-30 { padding-top: 30px; }    .pt-40 { padding-top: 40px; }
.pl-10 { padding-left: 10px; }   .pl-20 { padding-left: 20px; }
.pr-10 { padding-right: 10px; }  .pr-20 { padding-right: 20px; }
.pb-10 { padding-bottom: 10px; } .pb-20 { padding-bottom: 20px; }
.pb-30 { padding-bottom: 30px; } .pb-40 { padding-bottom: 40px; }

/* =============================== 文字 */
.font12 { font-size: 12px; } .font13 { font-size: 13px; } .font14 { font-size: 14px; }
.font15 { font-size: 15px; } .font16 { font-size: 16px; } .font18 { font-size: 18px; }
.font20 { font-size: 20px; } .font24 { font-size: 24px; } .font28 { font-size: 28px; }
.font32 { font-size: 32px; } .font36 { font-size: 36px; } .font48 { font-size: 48px; }

.font-ell1 { overflow: hidden; text-overflow: ellipsis; word-break: break-all; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }
.font-ell2 { overflow: hidden; text-overflow: ellipsis; word-break: break-all; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.font-ell3 { overflow: hidden; text-overflow: ellipsis; word-break: break-all; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }

.font-weight { font-weight: 700; }
.font-center { text-align: center; }
.font-grey  { color: rgba(17, 17, 17, 0.40); }
.font-black { color: #111111; }
.font-white { color: #F2F2F2; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }
.overflow { overflow: hidden; }
.over-hide { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }