body {
    background-image: url("../images/tło.png");
    overflow: hidden;
}
#gameCanvas {
    width: 100%;
    height: 100%;
    color: white;
    background-color: black;
    overflow: hidden;
}
#endScreen {
    padding-top: 100px; /* Location of the box */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    z-index: 1000;
    position: absolute;
    margin: auto;
    align-content: center;
    align-self: center;
    padding-left: 40vw;
    padding-top: 40vh;
    color: #ffffff;
    margin-top: auto;
    margin-bottom: auto;
    display: none;
}

.pure-material-button-contained {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    display: inline-block;
    box-sizing: border-box;
    border: none;
    border-radius: 4px;
    padding: 0 16px;
    min-width: 64px;
    height: 36px;
    vertical-align: middle;
    text-align: center;
    text-overflow: ellipsis;
    text-transform: uppercase;
    color: rgba(var(--pure-material-onprimary-rgb, 0, 0, 0));
    background-color: rgba(
        var(--pure-material-primary-rgb, 255, 255, 255, 87%)
    );
    box-shadow: 0 3px 1px -2px rgba(0, 0, 0, 0.2),
        0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12);
    font-family: var(
        --pure-material-font,
        "Roboto",
        "Segoe UI",
        BlinkMacSystemFont,
        system-ui,
        -apple-system
    );
    font-size: 14px;
    font-weight: 500;
    line-height: 36px;
    overflow: hidden;
    outline: none;
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.pure-material-button-contained::-moz-focus-inner {
    border: none;
}

/* Overlay */
.pure-material-button-contained::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgb(var(--pure-material-onprimary-rgb, 255, 255, 255));
    opacity: 0;
    transition: opacity 0.2s;
}

/* Ripple */
.pure-material-button-contained::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    border-radius: 50%;
    padding: 50%;
    width: 32px; /* Safari */
    height: 32px; /* Safari */
    background-color: rgb(var(--pure-material-onprimary-rgb, 255, 255, 255));
    opacity: 0;
    transform: translate(-50%, -50%) scale(1);
    transition: opacity 1s, transform 0.5s;
}

/* Hover, Focus */
.pure-material-button-contained:hover,
.pure-material-button-contained:focus {
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.2),
        0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12);
}

.pure-material-button-contained:hover::before {
    opacity: 0.08;
}

.pure-material-button-contained:focus::before {
    opacity: 0.24;
}

.pure-material-button-contained:hover:focus::before {
    opacity: 0.3;
}

/* Active */
.pure-material-button-contained:active {
    box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2),
        0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12);
}

.pure-material-button-contained:active::after {
    opacity: 0.32;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0s;
}