.button {
 border-style: none;
    border-color: inherit;
    border-width: medium;
    background: #3a7999;
    color: #f2f2f2;
    padding: 10px;
    font-size: 18px;
    border-radius: 5px;
    position: relative;
    box-sizing: border-box;
    transition: all 500ms ease;
    top: -10px;
    left: 3px;
    height: 45px;
    width: 120px;
    
}
.button:hover {
background: rgba(0,0,0,0);
 color: #3a7999;
 box-shadow: inset 0 0 0 3px #3a7999;
}

.lds-circle {
  display: inline-block;
  transform: translateZ(1px);
}
.lds-circle > div {
  display: inline-block;
  width: 64px;
  height: 64px;
  margin: 8px;
  border-radius: 50%;
  background: #fff;
  animation: lds-circle 2.4s cubic-bezier(0, 0.2, 0.8, 1) infinite;
}
@keyframes lds-circle {
  0%, 100% {
    animation-timing-function: cubic-bezier(0.5, 0, 1, 0.5);
  }
  0% {
    transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(1800deg);
    animation-timing-function: cubic-bezier(0, 0.5, 0.5, 1);
  }
  100% {
    transform: rotateY(3600deg);
  }
}