/* Bootstrap Icons 基础样式 */

/* 大小 */
.bi-xs {font-size: 0.75rem;}
.bi-sm {font-size: 1rem;}
.bi-lg {
  font-size: 1.33333333em;
  line-height: 0.75em;
  vertical-align: -15%;
}
.bi-2x {font-size: 2em;}
.bi-3x {font-size: 3em;}
.bi-4x {font-size: 4em;}
.bi-5x {font-size: 5em;}

/* 方向 */
.bi-rotate-90  { display: inline-block; transform: rotate(90deg);}
.bi-rotate-180 { display: inline-block; transform: rotate(180deg);}
.bi-rotate-270 { display: inline-block; transform: rotate(270deg);}
/* 翻转 */
.bi-flip-h { display: inline-block; transform: scaleX(-1);}
.bi-flip-v { display: inline-block; transform: scaleY(-1);}

/* 旋转动画 */
.bi-spin {display: inline-block;animation: bi-spin 1s linear infinite;}
@keyframes bi-spin {
  from { transform: rotate(0deg);}
  to   { transform: rotate(360deg);}
}