@keyframes glow {
    0% {
        opacity: 100%;
    }
    20% {
        opacity: 50%;
      }
    30% {
        opacity: 65%;
      }
    40% {
        opacity: 80%;
      }
      80% {
        opacity: 100%;
      }
      90% {
        opacity: 80%;
      }
    100% {
        opacity: 100%;
    }
}

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

body {
    background-color: black;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

#menu-div {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url(./images/misc/menu.png);
    background-size: 100% 100%;
}

.text-red {
    color: red;
}

#disclaimer, #congrats-text {
    width: 100%;
    height: 100%;
    font-size: 20px;
    position: absolute;
    display: flex;
    text-align: center;
    align-items: center;
    opacity: 0%;
    justify-content: center;
    background-color: black;
}

#congrats-text {
    opacity: 100%;
}

#black-screen, #black-screen-game {
    position: absolute;
    background-color: black;
    width: 100%;
    height: 100%;
}

#play-button {
    margin: auto auto;
    font-family: 'Times New Roman', Times, serif;
    background-color: none;
    background-color: none;
    position: absolute;
    background: none;
    border: none;
    font-size: 25px;
    transform: translateX(-50%) translateY(-50%);
    top: 50%;
    left: 50%;
    animation: glow infinite 2s ease-in-out
}

#logo {
    animation: glow infinite linear 1s;
    float: right;
    right: 0%;
    position: absolute;
    height: 100%;
    width: 35%;
}

#dead-screen {
    width: 100%;
    height: 100%;
    display: none;
    position: absolute;
    opacity: 0%;
}

#edu-purposes {
    text-align: left;
    position: absolute;
    bottom: 0%;
    left: 0%;
}