body {
  margin: 0;
  background: black;
}
.game-page {
  background: #d7d7d7;
}
.main-button-wrap {
  display: block;
  position: absolute;
  width: 100%;
  top: 330px;
  text-align: center;
  z-index: 99;
}
.main-button {
  font-family: Arial;
  font-size: 20px;
  text-decoration: none;
  color: #000000;
  border: solid 1px;
  padding: 10px 50px;
  border-radius: 3px;
  background: white;
}
.main-button:hover {
  text-shadow: 0 0 30px #00000061;
}

.header-wrap {
  display: block;
  position: absolute;
  width: 100%;
  text-align: center;
  background: url(/header.jpeg) center no-repeat;
  height: 300px;
  border-bottom: solid 2px #2b0b09;
}
.header {
  font-family: Arial;
  font-size: 46px;
  background: #0000007d;
  font-weight: lighter;
  color: #e5e5e5;
  display: inline-block;
  width: 100%;
  margin-top: 150px;
  height: 106px;
  padding-top: 44px;
}
#game-frame {
  position: absolute;
  left: calc(50% - 300px);
  top: 380px;
  width: 600px;
  height: 400px;
  border: 0;
}

.menu {
  display: block;
  position: absolute;
}
.menu-button {
  display: block;
  position: fixed;
  width: 140px;
  height: 60px;
  top: 10px;
  left: 10px;
  background: #000000a3;
  font-family: Arial;
  text-align: center;
  line-height: 60px;
  cursor: pointer;
  border-radius: 5px;
  color: #ffffffb8;
  font-weight: bold;
  font-size: 28px;
  border: solid 1px #ffffffc4;
  box-shadow: 0 0 7px 2px #b5b5b5ba;
}
.menu-button:hover {
  color: #ffffff;
}
.menu-list {
  display: block;
  position: fixed;
  width: 360px;
  height: calc(100% - 105px);
  padding: 105px 0px 0px;
  background: #a9a9a9bf;
  border-right: solid 2px #525252;
  overflow: auto;
  font-family: Arial;
  transition: left 0.5s ease 0s;
}
.menu-list-item {
  cursor: pointer;
  padding: 5px 25px;
  overflow: hidden;
  background: #ffffff96;
  overflow: hidden;
  display: inline-block;
  height: 40px;
  line-height: 40px;
  color: #313131;
  text-decoration: none;
  font-size: 18px;
  font-weight: bold;
  width: 310px;
}
.menu-list-item:hover {
  background: #ffffffd4;
}
.menu-list-item.disabled {
  pointer-events: none;
  background: #ffffff;
  color: #9f0000;
}

.game-descr-wrap {
  position: absolute;
  top: 800px;
  font-family: Arial;
  color: #303030;
  width: 800px;
  left: calc(50% - 400px);
}