body{
    background-color: tomato;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
}
heading{
    color: white;
    font-family: sans-serif;
    font-size: 28px;
    text-decoration: underline;
    text-decoration-color: rgba(255,255,255,0.5);           
    text-decoration-thickness: 2px;            
    margin-top: 24px;
}
#gridContainer{
    display: grid;
    grid-template-columns: repeat(4, 1fr);  
    grid-template-rows: repeat(4, 1fr);    
    border: 1px solid snow;
}
.gridItem{
    width: 90px;
    height: 90px;
    cursor: pointer;

    justify-content: center;
    align-items: center;
    border: 1px solid snow;
}
#resetButton{
    margin-top: 24px;
    height: 28px;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    border-radius: 4px;
    font-weight: 700;
    box-shadow: 3px 3px 0px 2px rgba(255, 255, 255, 0.25);
}
#gameRuleContainer{
    color: white;
    font-family: sans-serif;
    
}
#gameRuleContainer > h6{
    font-size: 16px;
    margin-top: 24px;
    margin-bottom: 2px;
    padding: none;
}
img{
    width:90px;
    height:90px;
}