.demo-wrapper {
  background-color: #f9f9f9;
  border: 1px solid #e6e6e6;
  padding: 30px;
  margin-bottom: 2rem;
 }

.demo-block {  
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  padding-top: 56.25%;
}

.demo-overlay {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(0deg, rgba(0, 0, 0, .5), rgba(0, 0, 0, .5));
  backdrop-filter: blur(10px);
}
.demo-frame { 
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.demo-frame iframe {
  max-width: 100%;
  height: 100%;
  width: 100%;
  margin: 0;
  line-height: 1;
  border: none;
}
.demo-btn-block {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column; 
}
.btn-demo-1 {
  margin-bottom: 1.2rem;
}

.bottom-btn {
  display: none;
  text-align: center;
  margin-top: 20px; 
}