body{
    font-family:'Courier New', Courier, monospace;
    text-align: center;
    background-color:#FFFFEBFF;
}

#logo {
    display: block;
    margin: 0 auto;
}

.game-area {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.board-wrap {
    position: relative;
}

#board{
    width: 510px;
    height: 510px;
    position: relative;
    z-index: 2;
}

.numbers {
    display: grid;
    grid-template-columns: repeat(3, 64px);
    grid-auto-rows: 64px;
    margin-top: -45px;
}

.numbers img {
    width: 64px;
    height: 64px;
    display: none;
}

#num1, #num2, #num3, #num4, #num5, #num6, #num7, #num8, #num9, #blank {
    display: block;
    padding-left: 64px;
    padding-top: 64px;
    cursor: pointer;
}

#blank {
    grid-column: 2;
}

@keyframes hide {
    to { opacity: 0; }
}

@keyframes show {
    from { opacity: 0; }
    to   { opacity: 1; }
}

#tosleep {
    position: absolute;
    width: 585px;
    height: 272px;
    right: -353px;
    bottom: -42px;
    z-index: 1;
}

#walkingdone {
    position: absolute;
    width: 585px;
    height: 272px;
    right: -353px;
    bottom: -42px;
    z-index: 1;
    opacity: 0;
}

#eating{
    display: none;
}

#difficulty-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background-color: #FFFFEBFF;
}

#difficulty-screen #logo {
    margin-top: 20px;
}

#difficulty-wrap {
    position: relative;
    display: inline-block;
    margin: auto;
}

#selectdifficulty {
    display: block;
}

#easy-btn, #medium-btn, #hard-btn, #expert-btn {
    position: absolute;
    cursor: pointer;
}

#easy-btn {
    top: 144px;
    left: 136px;
    transform: translate(-50%, -50%);
}

#medium-btn {
    top: 144px;
    left: 410px;
    transform: translate(-50%, -50%);
}

#hard-btn {
    top: 240px;
    left: 148px;
    transform: translate(-50%, -50%);
}

#expert-btn {
    top: 240px;
    left: 420px;
    transform: translate(-50%, -50%);
}

#result-wrap {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    max-height: 90vh;
}

#result-overlay {
    max-width: 80vw;
    max-height: 80vh;
}

#result-btn {
    position: absolute;
    bottom: 25%;
    width: auto;
    height: auto;
    cursor: pointer;
    z-index: 1001;
}