*, *:before, *:after {
  box-sizing: border-box;
  outline: none;
}

body {
  background: #020438;
  font: 14px/1 'Open Sans', helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.box {
  height: 280px;
  width: 280px;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  background: #020438;
  border-radius: 100%;
  overflow: hidden;
}
.box .percent {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  display: -webkit-flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  color: #fff;
  font-size: 64px;
}
.box .water {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  -webkit-transform: translate(0, 100%);
          transform: translate(0, 100%);
  background: #4D6DE3;
}
.box .water_wave {
  width: 200%;
  position: absolute;
  bottom: 100%;
}
.box .water_wave_back {
  right: 0;
  fill: #C7EEFF;
  -webkit-animation: wave-back 1.4s infinite linear;
          animation: wave-back 1.4s infinite linear;
}
.box .water_wave_front {
  left: 0;
  fill: #4D6DE3;
  margin-bottom: -1px;
  -webkit-animation: wave-front .7s infinite linear;
          animation: wave-front .7s infinite linear;
}

@-webkit-keyframes wave-front {
  100% {
    -webkit-transform: translate(-50%, 0);
            transform: translate(-50%, 0);
  }
}

@keyframes wave-front {
  100% {
    -webkit-transform: translate(-50%, 0);
            transform: translate(-50%, 0);
  }
}
@-webkit-keyframes wave-back {
  100% {
    -webkit-transform: translate(50%, 0);
            transform: translate(50%, 0);
  }
}
@keyframes wave-back {
  100% {
    -webkit-transform: translate(50%, 0);
            transform: translate(50%, 0);
  }
}