body {
  position: relative;
  background-color: rgb(31, 23, 28);
}

.login-bg::before {
  content: "";
  background-color: #fff;
  width: 180%;
  height: 52%;
  position: absolute;
  border-top-left-radius: 60%;
  border-top-right-radius: 60%;
  bottom: 0;
  left: -40%;
  z-index: 1;
}

.login-content {
  z-index: 2;
  margin: 15vh 0;
}

.login-btn {
  margin-top: 85px;
}