<input class="checkbox-cb" id="checkbox-cb" type="checkbox" />
<div class="cookie-bar">
  <span class="message">This website uses cookies to give you an incredible experience. By using this website you agree to the <a href="#">terms</a></span>
  <span class="mobile">This website uses cookies, <a href="#">learn more</a></span>
  <label for="checkbox-cb" class="close-cb">x</label>
</div>

.cookie-bar {
  position: fixed;
  width: 100%;
  top: 0;
  right: 0;
  left: 0;
  height: 30px;
  text-align: center;
  line-height: 30px;
  background: linear-gradient(lighten(red, 10%), darken(red, 10%));
  color: white;
  font-size: 14px;
  font-family: "Lato", sans-serif;
  font-weight: 100;
  transition: .8s;
  animation: slideIn .8s;
  animation-delay: .8s;
  .message {
    white-space: nowrap;
    text-shadow: 0 1px 0 darken(red, 10%);
    @media (max-width: 767px){
      display: none;
    }
  }
  .mobile {
    display: none;
    @media (max-width: 767px){
      display: inline-block;
    }
  }
}
@keyframes slideIn {
  0% {
    transform: translateY(-50px);
  }
  100% {
    transform: translateY(0);
  }
}
.close-cb {
  border: none;
  color: white;
  background: darken(red, 20%);
  position: absolute;
  display: inline-block;
  right: 10px;
  top: 0;
  cursor: pointer;
  border-radius: 3px;
  box-shadow: inset 0 0 3px 0 rgba(0,0,0,.2);
  line-height: 30px;
  height: 30px;
  width: 30px;
  font-size: 16px;
  font-weight: bold;
  &:hover {
    background: darken(red, 10%);
  }
}
.checkbox-cb {
  display: none;
  &:checked + .cookie-bar {
    transform: translateY(-50px);
  }
}
a {
  color: rgb(92, 242, 255);;
}

// checkbox hack
// hit run to do it again.
// responsive -- shorter message for tablet/phones