body {
    margin: auto;
    text-align:center;
    background: linear-gradient(315deg,   #f9ccf9 ,  #c5f3f7  );
    display:inline;
}

a {
    color: mediumVioletRed;
    font-family: 'Pinyon Script', cursive;
    font-style: italic;
}

h1 {
    color: mediumVioletRed;
    letter-spacing: -4px;
    font-family: 'Pinyon Script', cursive;
    font-style: italic;
    font-variant: normal;
    font-weight: bold;
    font-size: 300%;
    border-bottom: 5px dotted mediumVioletRed;
    margin: .5em;
}

.timer {
    font-family: sans-serif;
    color: mediumvioletred;
    font-size: 120%;
    margin: 1em;
    padding: 0px;
}

.card {
    display:table-cell;
    vertical-align:middle;
    text-align:center;
    box-shadow: 10px 3px 5px  #fcfbe1 inset;
    box-shadow: 10px 3px 5px gray;
}

.hidden:hover {
    box-shadow: 10px 10px 10px #fcfbe1 inset;
    box-shadow: 10px 3px 5px rgba(0,0,0,0);
}

.red {
    background-color: lightpink;
}


.hey {
    border: solid 2px  #e05e9b ;
    box-shadow: 2px 2px 5px  #e05e9b inset;
}


.remove {
    border: solid 2px  #b6e7bd  ;
    box-shadow: 2px 2px 5px  #b6e7bd inset;
}

.board {
    width: 800px;
    height: 575px;
    text-align: center;
    margin: auto;
    border-style: solid 4px  #fcfbe1;
    border-radius: 10%;
    box-shadow: 15px 15px 30px gray;
}

.board div {
    display: inline-block;
    border-style: solid 1px #fcfbe1;
    vertical-align: middle;
    width: 150px;
    height: 150px; 
    margin: 15px;
    border-radius: 20%;
}
.revealed {
    visibility: visible !important;
    
}

img {
    z-index: -10;
    transform: scale(2.5,2.5);
    margin: 20px;
    vertical-align: middle;
    padding: 2em;
    position: relative;
}

 div .hidden {    
    background: linear-gradient(45deg,blue, pink);
    z-index: 20;
}
.show {
    background-color: lightgreen:
}

img.show {
    z-index: 10;
    background-color: lightblue;

}