.button,
.modal .button {
  background-image: linear-gradient(to right, var(--button-dark), var(--button-light));
  border: 0px solid var(--main-color);
  box-shadow: .1em .1em .1em #555;
  color: white;
  cursor: pointer;
  display: block;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .06em;
  margin: 2em auto 0;
  padding: .8em;
  text-transform: uppercase;
}
.modal #gdpr-agreed {
  font-size: .8rem;
}
.button:hover,
.modal #gdpr-agreed:hover {
  background-image: linear-gradient(to right, var(--button-dark-hover), var(--button-light-hover));
}
.button:active {
  box-shadow: initial;
  transform: translate(.1em, .1em) scale(.99);
}
.button--small {
  font-size: .8rem;
  font-weight: bold;
  padding: .8em;
  text-transform: initial;
}
.button--shallow {
  padding-block: .5em;
}
.button--small-low {
  background-image: initial;
  background-color: var(--button-alt);
  color: var(--main-color);
}
.button--small-low:hover {
  background-image: initial;
  background-color: var(--button-alt-hover);
}
.button--wide {
  margin-top: 3em;
  width: 100%;
}
.button--no-margin {
  margin: 0;
}
.button.await::after {
  --halftransparent: rgba(255, 255, 255, .75);
  animation: loading-spinner 750ms linear infinite;
  border: 2px solid;
  border-color: var(--halftransparent) var(--halftransparent) var(--halftransparent) transparent;
  border-radius: 50%;
  content: "";
  display: inline-block;
  margin-left: .75em;
  width: 1em;
  height: 1em;
}

a.button {
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
  text-decoration: none;
  max-width: 10em;
}
a.button:hover {
  color: white;
}
a.button--left {
  margin: 2em 0;
}
a.button--sticky {
  position: sticky;
  top: 1em;
  left: 0;
  z-index: 1;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin: 0 auto;
  margin-top: 2em;
}
@media (min-width: 45em) {
  .button-group {
    width: 50%;
  }
}
.button-group > * {
  margin-top: .5em;
}