a.btn.btn-green {
    display: inline-block;
    vertical-align: middle;
    -webkit-transform: perspective(1px) translateZ(0);
    transform: perspective(1px) translateZ(0);
    box-shadow: 0 0 1px rgba(0, 0, 0, 0);
    position: relative;
    -webkit-transition-property: color;
    transition-property: color;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
  }
  a.btn.btn-green:before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #2098D1;
    -webkit-transform: scaleY(0);
    transform: scaleY(0);
    -webkit-transform-origin: 50% 100%;
    transform-origin: 50% 100%;
    -webkit-transition-property: transform;
    transition-property: transform;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
    -webkit-transition-timing-function: ease-out;
    transition-timing-function: ease-out;
  }
  a.btn.btn-green:hover,   a.btn.btn-green:focus,   a.btn.btn-green:active {
    color: white;
  }
  a.btn.btn-green:hover:before,   a.btn.btn-green:focus:before,   a.btn.btn-green:active:before {
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }