.pulse:hover,.pulse:focus{animation:pulse 1s;box-shadow:0 0 0 2em transparent}@keyframes pulse{0%{box-shadow:0 0 0 0 var(--hover)}}button{color:gray;transition:.25s;background:none;border:2px solid;font-size:.7vw;line-height:1;padding:.5em;width:8vw;--hover: gray}button:hover,button:focus{border-color:var(--hover);color:#fff}.tooltip{background-color:#000000b3;color:#fff;padding:.3vh 1vw;border-radius:.75vw;position:absolute;font-size:.8vw;z-index:1000;transform:translate(-50%,-100%);transition:opacity .2s ease-in-out;font-family:system-ui}.prevent-select{-webkit-user-select:none;-ms-user-select:none;user-select:none}