body {
  background: #43cea2;
  background: -webkit-linear-gradient(to right, #e3e3e3, #50b8f56b);
  background: linear-gradient(to right, #e3e3e3, #50b8f56b);
}
#contenido {
  background-color: white;
  margin-top: 40px;
  -webkit-box-shadow: 0 8px 10px 1px rgba(0, 0, 0, 0.14),
    0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.3);
  box-shadow: 0 8px 10px 1px rgba(0, 0, 0, 0.14),
    0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.3);
}
#contenido::after {
  clear: both;
  display: block;
  content: "";
}
header {
  padding: 10px;
  text-align: center;
  color: white;
  font-size: 22px;
  font-family: "Raleway", sans-serif;
  font-weight: 100;
}
form {
  margin: 30px 0;
}
#loaders {
  text-align: center;
}
#resetBtn {
  float: right;
}

#spinner {
  display: none;
  justify-content: center;
  padding: 3rem 0;
}

.sk-chase {
  width: 40px;
  height: 40px;
  position: relative;
  animation: sk-chase 2.5s infinite linear both;
}

.sk-chase-dot {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  animation: sk-chase-dot 2s infinite ease-in-out both;
}

.sk-chase-dot:before {
  content: "";
  display: block;
  width: 25%;
  height: 25%;
  background-color: #0288d1;
  border-radius: 100%;
  animation: sk-chase-dot-before 2s infinite ease-in-out both;
}

.sk-chase-dot:nth-child(1) {
  animation-delay: -1.1s;
}
.sk-chase-dot:nth-child(2) {
  animation-delay: -1s;
}
.sk-chase-dot:nth-child(3) {
  animation-delay: -0.9s;
}
.sk-chase-dot:nth-child(4) {
  animation-delay: -0.8s;
}
.sk-chase-dot:nth-child(5) {
  animation-delay: -0.7s;
}
.sk-chase-dot:nth-child(6) {
  animation-delay: -0.6s;
}
.sk-chase-dot:nth-child(1):before {
  animation-delay: -1.1s;
}
.sk-chase-dot:nth-child(2):before {
  animation-delay: -1s;
}
.sk-chase-dot:nth-child(3):before {
  animation-delay: -0.9s;
}
.sk-chase-dot:nth-child(4):before {
  animation-delay: -0.8s;
}
.sk-chase-dot:nth-child(5):before {
  animation-delay: -0.7s;
}
.sk-chase-dot:nth-child(6):before {
  animation-delay: -0.6s;
}

@keyframes sk-chase {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes sk-chase-dot {
  80%,
  100% {
    transform: rotate(360deg);
  }
}

@keyframes sk-chase-dot-before {
  50% {
    transform: scale(0.4);
  }
  100%,
  0% {
    transform: scale(1);
  }
}