.b-backtop{position:fixed;background-color:var(--b-color-primary);width:40px;height:40px;border-radius:50%;color:var(--b-color-white);display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--b-box-shadow-lv2);cursor:pointer;z-index:5}.b-backtop:hover{background-color:var(--b-color-primary-4);box-shadow:var(--b-box-shadow-lv3)}.b-backtop__icon{font-size:20px}.b-backtop.is-custom{border-radius:var(--b-border-radius-max);width:auto;min-height:40px;height:auto;padding:8px 12px}