vant/lib/floating-bubble/index.css

:root,:host{--van-floating-bubble-size: 48px;--van-floating-bubble-initial-gap: 24px;--van-floating-bubble-icon-size: 28px;--van-floating-bubble-background: var(--van-primary-color);--van-floating-bubble-color: var(--van-background-2);--van-floating-bubble-z-index: 999;--van-floating-bubble-border-radius: var(--van-radius-max)}.van-floating-bubble{position:fixed;left:0;top:0;right:var(--van-floating-bubble-initial-gap);bottom:var(--van-floating-bubble-initial-gap);width:var(--van-floating-bubble-size);height:var(--van-floating-bubble-size);box-sizing:border-box;display:flex;justify-content:center;align-items:center;overflow:hidden;cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:none;background:var(--van-floating-bubble-background);color:var(--van-floating-bubble-color);border-radius:var(--van-floating-bubble-border-radius);z-index:var(--van-floating-bubble-z-index);transition:transform var(--van-duration-base)}.van-floating-bubble:active{opacity:.8}.van-floating-bubble__icon{font-size:var(--van-floating-bubble-icon-size)}