*{
    font-family: sans-serif;
}
html
{
    height:100%;
    background-color:#dde2e3;
}
.gametitle{
    text-align: center;
    font-size: 30px;
    color: #2c2e9a;
    margin-top: 50px;
}
#board{
    background-color:#abd7ec;
    width: 500px;
    height: 380px;
    border-radius:5px;  
    position: relative;
    margin: 50px auto;
}
#right{
    padding:5px;
    background-color:#4fb832;
    width: 70px;
    position: absolute;
    margin: 20px 200px;
    text-align: center;
    color:white;
    border-radius: 5px;
    display:none;
}
#wrong{
    padding:5px;
    background-color: #bb1010;
    width: 100px;
    position: absolute;    
    margin: 20px 200px;
    text-align: center;
    color:white;
    border-radius: 5px;    
    display:none;
}
#score{
    padding: 5px;
    background-color:#c5d750;
    width:80px;
    text-align:center;
    position: absolute;
    margin: 20px 380px;
    border-radius: 5px;
}
#problem{
    padding:5px;
    background-color:#4d74df;
    width: 400px;
    height: 60px;
    text-align:center;
    position: absolute;
    margin: 85px 40px;
    font-size: 40px;
    line-height: 60px;
    color:white;
    border-radius: 5px;
}
#instruction{
    padding:5px;
    background-color:#75ba26;
    width: 400px;
    height: 30px;    
    text-align:center;
    line-height: 30px;
    position: absolute;
    margin: 165px 40px;
    font-size: 20px;
    color:white;
    border-radius: 5px;
}
#answers{
    margin: 215px 40px;
    position: absolute;   
}
#answer1, #answer2, #answer3, #answer4{
    padding: 5px;
    height: 50px; 
    line-height: 50px;
    width: 60px;
    background-color: aliceblue;
    float:left;
    border-radius: 5px;
    font-size: 34px;
    text-align:center;
    margin-right: 43px;
}
#answer1:hover, #answer2:hover, #answer3:hover, #answer4:hover{
    background-color:#4b4ecc;
    color:white;
    cursor:pointer;
}
#answer4{
    margin-right:0;
}
#start{
    padding:5px;
    background-color:#9837ae;
    width: 90px;
    position: absolute;    
    margin: 300px 210px;
    text-align: center;
    color:white;
    border-radius: 5px;   
}
#reset{
    padding:5px;
    background-color:#9837ae;
    width: 90px;
    position: absolute;    
    margin: 300px 210px;
    text-align: center;
    color:white;
    border-radius: 5px;  
    display:none;
}
#reset:hover, #start:hover{
    background-color: #b739e9;
    cursor:pointer;
}
#time{
    padding:5px;
    background-color:#e4c6f0;
    width: 105px;
    text-align: center;
    position: absolute;
    margin: 310px 350px;
    border-radius: 5px;
    display:none;
}
#gameover{
    padding:5x;
    line-height: 50px;
    background-color:#304f96;
    color: white;
    width: 350px;
    height: 210px;
    position:absolute;
    margin: 75px 70px;
    text-align:center;
    font-size: 30px; 
    border-radius: 5px;
    z-index: 2;
    display:none;
}