main {
  height: 100vh;
  background-image: url("../background.jpg"), url("../background-dark.jpg");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  overflow: hidden;
  animation:3s 2s blinkBackground linear ;
}
@keyframes blinkBackground {
  20% {
    background-blend-mode:normal;
  }
  23% {
    background-blend-mode: saturation;
  }
  26% {
    background-blend-mode: normal;
  }
  29% {
    background-blend-mode: saturation;
  }
  32% {
    background-blend-mode: normal;
  }
  35% {
    background-blend-mode: saturation;
  }
  38% {
    background-blend-mode: normal;
  }
  41% {
    background-blend-mode: saturation;
  }
  44% {
    background-blend-mode: normal;
  }
}
body {
  font-family: "Open Sans", sans-serif;
  margin: 0;
  padding: 0;
  background: #232f52;
}

button:focus {
  outline: none;
}

.start {
  position: absolute;
  top: calc(50% + 100px);
  left: 49%;
  background: #51d05e;
  transform: scale(1.5) translate(-26%, -50%);
  width: 100px;
  height: 25px;
  border: 2px solid #4cbd58;
  color: white;
  font-weight: bold;
  border-radius: 5px;
  transition: 0.3s ease;
  user-select: none;
  cursor: pointer;
  filter: drop-shadow(2px 2px 2px rgba(89, 217, 102, 0.2));
}
strong.message-text {
  font-size: 40px;
}
.start:hover {
  background: #4cbd58;
}
.shadow {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  transform: scale(1.5) translate(-33%, -50%);
  border-radius: 10px;
  border: 2px solid white;
  width: 400px;
  height: 100px;
  box-shadow: inset 0px 0px 20px 0px black;
}

.random {
  position: absolute;
  overflow: hidden;
  left: 50%;
  top: 50%;
  transform: scale(1.5) translate(-33%, -50%);
  border-radius: 10px;
  width: 398px;
  height: 100px;
  background: #161d31;
}
.cards {
  position: absolute;
  left: -270px;
  top: 0;
  width: 18000px;
  height: 100%;
  transition: 5s ease;
}

.cards > div {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  float: left;
  font-family: sans-serif;
  font-weight: bold;
  font-size: 20px;
  margin-top: 5px;
  border-left: 5px solid black;
  width: 100px;
  height: 90px;
  color: #6a6a6a;
  background: white;
  border-radius: 10px;
}

.result {
  position: absolute;
  z-index: 10;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  border: 10px solid transparent;
  border-top: 20px solid #425dd8;
  filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.5));
}
.roulette-wrap {
  position: absolute;
  left: 50%;
  transform: scale(1.2) translate(-42%, -15%);
  top: 62%;
  width: 42%;
  height: 290px;
  background: rgba(0, 0, 0, 0.37);
  border-radius: 10px;
}
.contact-wrap {
  z-index: 13;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  position: absolute;
  bottom: 30px;
}
.main-link {
  padding: 4px;
  color: white;
  line-height: 30px;
  font-size: 24px;
}
.overlay {
  position: absolute;
  z-index: 11;
  width: 100%;
  height: 100vh;
  background: rgba(24, 24, 24, 0.603);
  filter: blur(10px);
}
.hidden {
  display: none;
}
.message-wrap {
  padding: 30px;
  position: absolute;
  z-index: 12;
  width: 49%;
  height: 424px;
  left: 52%;
  top: 58%;
  transform: translate(-50%, -50%);
  background: rgba(24, 24, 24, 0.712);
  font-size: 24px;
  line-height: 30px;
  color: white;
  border-radius: 10px;
  border: 2px solid white;
}
.opacity {
  opacity: 0;
}
.message-text {
  text-align: center;
  display: block;
  margin: 30px auto;
}
.message-text {
  padding: 20px;
}
@media screen and (max-width: 1440px) {
  .message-wrap {
    width: 70%;
    height: 432px;
    left: 52%;
    top: 62%;
  }
  .roulette-wrap {
    transform: scale(1.5) translate(-30%, -5%);
    width: 46%;
  }
  .shadow {
    transform: scale(1.1) translate(-46%, -50%);
  }
  .random {
    transform: scale(1.1) translate(-46%, -50%);
  }
}

@media screen and (max-width: 1024px) {
  .message-wrap {
    width: 84%;
    height: 424px;
    left: 50%;
    top: 51%;
    font-size: 28px;
  }
  main {
    background-image: url("../planshyk.jpg"), url("../planshyk-dark.jpg");
    background-position: top;
  }
  .roulette-wrap {
    transform: scale(1.5) translate(-33%, -35%);
    width: 56%;
    height: 250px;
  }
  .shadow {
    transform: scale(1) translate(-50%, -64%);
  }
  .random {
    transform: scale(1) translate(-50%, -64%);
  }
  .start {
    position: absolute;
    top: calc(50% + 100px);
    left: 49%;
  }
}

@media screen and (max-width: 768px) {
  .message-wrap {
    width: 640px;

    height: 410px;
    left: 50%;
    top: 46%;
  }
}

@media screen and (max-width: 640px) {
  .message-wrap {
    width: 400px;
  }
  .random {
    transform: scale(0.7) translate(-72%, -67%);
  }
  .shadow {
    transform: scale(0.7) translate(-72%, -66%);
  }
  .roulette-wrap {
    transform: scale(1) translate(-50.2%, -35%);
    width: 100%;
    height: 250px;
  }
}
@media screen and (max-width: 430px) {
  .message-wrap {
    top: 57%;
    width: 100%;
  }
  main {
    background-image: url("../telchik.jpg"), url("../telchik-dark.jpg");
  }
  .shadow {
    transform: scale(0.6) translate(-83%, -154%);
  }
  .random {
    transform: scale(0.6) translate(-83%, -157%);
  }
  .roulette-wrap {
    transform: scale(1.5) translate(-34%, -5%);
    width: 61%;
    top: 50%;
    height: 180px;
  }
  .start {
    position: absolute;
    top: 80%;
    left: 46%;
  }
}

@media screen and (max-width: 375px) {
  .main-link {
    font-size: 21px;
  }
  .message-wrap {
    top: 52%;
    height: 418px;
  }
  .shadow {
    transform: scale(0.5) translate(-100%, -164%);
  }
  .random {
    transform: scale(0.5) translate(-100%, -166%);
  }
}
@media screen and (max-width: 320px) {
  .shadow {
    transform: scale(0.4) translate(-124%, -223%);
  }
  .random {
    transform: scale(0.4) translate(-124%, -227%);
  }
}