react-carbon-ads/src/css/carbon.css

add your `carbon` embed code with jsx

.carbon-adds-wrapper {
  margin: 40px 0px; }

#carbonads {
  --width: 300px;
  --font-size: 14px; }

#carbonads {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: block;
  overflow: hidden;
  margin-bottom: 20px;
  max-width: var(--width);
  border-radius: 4px;
  text-align: center;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
  background-color: #fafafa;
  font-size: var(--font-size);
  line-height: 1.5;
  text-align: left;
  margin: 0 auto;
  margin-bottom: 30px; }

#carbonads a {
  color: inherit;
  text-decoration: none; }

#carbonads a.carbon-img {
  float: left;
  padding: 0px;
  margin: 0px; }

#carbonads a:hover {
  color: inherit; }

#carbonads span {
  position: relative;
  display: block;
  overflow: hidden;
  color: #000; }

.carbon-img {
  display: block;
  margin-bottom: 8px;
  max-width: var(--width);
  line-height: 1; }

.carbon-img img {
  display: block;
  margin: 0 auto;
  max-width: var(--width) !important;
  width: auto;
  height: 100px;
  float: left; }

.carbon-text {
  display: block;
  padding: 0px;
  padding-left: 137px;
  padding-right: 4px;
  pading-top: 10px;
  position: relative;
  font-size: 13px; }

.carbon-poweredby {
  display: block;
  padding: 10px var(--font-size);
  text-transform: uppercase;
  letter-spacing: .5px;
  font-weight: 600;
  font-size: 9px;
  line-height: 0;
  color: #9a9a9a !important; }

@media only screen and (min-width: 320px) and (max-width: 759px) {
  #carbonads {
    float: none;
    margin: 0 auto;
    max-width: 330px;
    margin-bottom: 30px; }
  #carbonads span {
    position: relative; }
  #carbonads > span {
    max-width: none; }
  .carbon-img {
    float: left;
    margin: 0; }
  .carbon-img img {
    max-width: 130px !important; }
  .carbon-text {
    float: left;
    margin-bottom: 0;
    padding: 8px 20px;
    text-align: left;
    max-width: calc(100% - 130px - 3em); }
  .carbon-poweredby {
    left: 130px;
    bottom: 0;
    display: block;
    width: 100%; } }