* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #019262b9;
  width: 100%;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-top: 150px;
  width: 55%;
}

@media (max-width: 900px) {
  .center {
    width: 100%;
  }
}