html{
    height: 100%;
    background: radial-gradient(circle, white, #ccc);
}

#container{
    height: 400px;
    width: 550px;
    background-color: #9dd2ea;
    margin: 100px auto;
    padding:20px;
    border-radius: 10px;
    box-shadow: 0px 4px 10px 0px #009de4;
    position: relative;
} 

#score{
    background-color: #f1ff92;
    color: #888e5f;
    padding: 10px;
    position: absolute;
    left: 500px;
    box-shadow: 0px 3px 0px #9da853;
}

#correct{
    position: absolute;
    left: 260px;
    background-color: #42e252;
    color: white;
    padding: 11px;
    display: none;
}

#wrong{
    position: absolute;
    left: 260px;
    background-color: #de401a;
    color: white;
    padding: 11px;
    display: none;
    
}

#question{
    width: 450px;
    height: 150px;
    margin: 60px auto 10px auto;
    background-color: #9da0ea;
    box-shadow: 0px 3px #535aa8;
    font-size: 100px;
    text-align: center;
    line-height: 130px;
    font-family: cursive, sans-serif;
    color: black;
}

#instruction{
    width: 450px;
    height: 50px;
    background-color: #b481d9;
    margin: 10px auto;
    text-align: center;
    line-height: 45px;
    box-shadow: 0px 3px #8153a8;
}

#choices{
    height: 92px;
    width: 450px;
    margin: 5px auto;
}

.box{
    width: 85px;
    height: 85px;
    background-color: white;
    float: left;
    margin-right: 36.67px;
    border-radius: 3px;
    cursor: pointer;
    box-shadow: 0px 3px rgba(0,0,0,0.2);
    text-align: center;
    line-height: 80px;
    position: relative;
    transition: all 0.2s;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    -o-transition: all 0.2s;
    -ms-transition: all 0.2s;
}

.box:hover, #start-reset:hover{
    background-color: #9c89f6;
    color: white;
    box-shadow: 0px 3px #6b54d3;
}

.box:active, #start-reset:active{
    box-shadow: 0px 0px #6b54d3;
    top: 3px;
}

#box4{
    margin-right: 0;
}

#start-reset{
    background-color: rgba(255,255,255,0.5);
    width: 85px;
    margin: 0 auto;
    padding: 8px;
    border-radius: 3px;
    cursor: pointer;
    box-shadow: 0px 3px rgba(0,0,0,0.2);
    text-align: center;
    position: relative;
    transition: all 0.2s;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    -o-transition: all 0.2s;
    -ms-transition: all 0.2s;
}

#time{
    width: 157px;
    padding: 8px;
    position: absolute;
    top: 395px;
    left:400px;
    background-color: rgba(181,235,36,0.78);
    border-radius: 3px;
    box-shadow: 0px 3px rgba(0,0,0,0.2);
/*    unlike the display property, visibility is still in the page interacting with other elements even when nt displaying*/
/*    visibility: hidden; */
    display: none;
}

#gameOver{
    height: 200px;
    width: 500px;
    background: linear-gradient(#f3ca6b, #f3706c);
    color: white;
    font-size: 2.5em;
    text-align: center;
    text-transform: uppercase;
    position: absolute;
    top: 100px;
    left: 44px;
    z-index: 2;
    display: none;
}