body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: 0;
}

.main-container {
  max-width: 75%;
  margin: 0 auto;
  padding: 0;
  background-color: #fff;
  box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.5);
  overflow: hidden;
}

@media (max-width: 768px) {
  .main-container {
    max-width: 100%;
  }
}