smoke.css

/* Demo specific styling for our element */

polymer-ui-carousel {
  display: inline-block;
  height: 450px;
  width: 800px;
  background: #4285f4;
  margin: 5px;
  clear:both;
  font-family: "Open Sans", Helvetica, Arial, sans-serif;
}

polymer-ui-animated-pages > div {
  display: -webkit-flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  color: black;
}

/* Style the different slides */

polymer-ui-animated-pages > div:nth-child(2) {
  background: #5bc0de; 
}

polymer-ui-animated-pages > div:nth-child(3) {
  background: #fbb450;
}

polymer-ui-animated-pages > div:nth-child(4) {
  background: #bd362f;
}

polymer-ui-animated-pages > div:nth-child(5) {
  background: #2f96b4;
}

/* Disable focus */

polymer-ui-carousel .btn-prev, polymer-ui-carousel .btn-next {
  background-color: transparent;
}

polymer-ui-carousel button:focus {
  /*outline: 0;*/
}

p {
  margin: 10px;
  display: block;
}

/* Responsive styling */

@media only screen and (min-width: 900px) {
    /* tablets and desktop */
    polymer-ui-carousel {
      width: 800px;
    }
}

@media only screen and (min-width: 768px) and (max-width: 899px) {
    /* tablets and desktop */
    polymer-ui-carousel {
      width: 700px;
    }
}

@media only screen and (max-width: 767px) {
    /* phones */
    polymer-ui-carousel {
      width: 400px;
    }          
}

@media only screen and (max-width: 350px) {
    /* phones */
    polymer-ui-carousel {
      width: 300px;
    }   

    polymer-ui-carousel ^^ #controls {
      display: none;
    }         
}