html, body {
  margin: 0;
  padding: 0;
  overflow: hidden; 
}
.banner-container {
  width: 300px;
  height: 250px;
  
  background: url('https://casinoslotsspelen.nl/wp-content/uploads/2022/01/777bannerm.png') center center / cover no-repeat;
  
  position: relative;
  overflow: hidden;
  cursor: pointer;
  box-sizing: border-box;
}

.roulette-container {
  position: absolute;
  width: 110px;  
  height: 110px;
  
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
}

.roulette-wheel {
  width: 100%;
  height: 100%;
  animation: spin-back-forth 10s cubic-bezier(0.445, 0.05, 0.55, 0.95) infinite alternate;
}

@keyframes spin-back-forth {
  0% { transform: rotate(0deg); }
  45% { transform: rotate(360deg); }
  50% { transform: rotate(355deg); }
  95% { transform: rotate(-5deg); }
  100% { transform: rotate(0deg); }
}