h1 {
    text-align: center;
}
.oar-gform-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding-top: 200%; /* 1:1 Aspect Ratio */
    box-sizing: border-box;
}

.oar-gform-iframe {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  border: none;
}