@import url("https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500&display=swap");
body {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 100vh;
  background-color: #2196f3;
  font-family: "Open Sans", sans-serif;
}
form button {
  cursor: pointer;
  margin-top: 20px;
  background-color: #fff;
  color: #333;
  width: 200px;
  height: 60px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 4px;
  display: inline-block;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out,
    border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
form button:hover {
  background-color: rgb(228, 228, 228);
}

.alert {
  margin-bottom: 20px;
  position: relative;
  padding: 0.75rem 1.25rem;
  border: 1pxsolid transparent;
  border-radius: 0.25rem;
}
.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}
.alert-info {
  color: #0c5460;
  background-color: #d1ecf1;
  border-color: #bee5eb;
}

.loading {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1050;
  overflow: hidden;
  outline: 0;
  transition: opacity 0.15s linear;
  background-color: #000;
  opacity: 0.5;
}

.loading .loader {
  position: relative;
  top: calc(50% - 0.75em);
  left: calc(50% - 0.75em);
  z-index: 1055;
  width: 1.5em;
  height: 1.5em;
  border-radius: 50%;
  box-shadow: 0 -3em rgba(255, 255, 255, 1),
    2.25em -2.25em rgba(255, 255, 255, 0.875), 3em 0 rgba(255, 255, 255, 0.75),
    2.25em 2.25em rgba(255, 255, 255, 0.625), 0 3em rgba(255, 255, 255, 0.5),
    -2.25em 2.25em rgba(255, 255, 255, 0.375), -3em 0 rgba(255, 255, 255, 0.25),
    -2.25em -2.25em rgba(255, 255, 255, 0.125);
  animation: spin 1.2s linear infinite;
}

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