body {
  background: url('https://storage.skydonate.ru/uploads/image/hh.png') no-repeat center center fixed;
  background-size: cover;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
  pointer-events: none;
}


.slogan-bg::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 700px;
  height: 100%;
  background: url('https://storage.skydonate.ru/uploads/image/51-513134_cartoon-lava-puddle-clipart.png') no-repeat bottom right;
  background-size: contain;
  pointer-events: none;
  z-index: 1;
}

.slogan-bg img {
  display: none;
}