vue-material/dist/components/mdCore/index.css

.md-ink-ripple{pointer-events:none;overflow:hidden;position:absolute;top:0;right:0;bottom:0;left:0;-webkit-mask-image:radial-gradient(circle,#fff 100%,#000 0);mask-image:radial-gradient(circle,#fff 100%,#000 0);transition:all .3s cubic-bezier(.55,0,.55,.2)}.md-ripple{position:absolute;transform:scale(0);background-color:currentColor;opacity:.26;border-radius:50%}.md-ripple.md-active{animation:ripple 1s cubic-bezier(.25,.8,.25,1)}@keyframes ripple{to{transform:scale(1.5);opacity:0}}