* {
    box-sizing: border-box;
}
body {
    background: rgb(2,0,36);
    background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(26,26,152,1) 25%, rgba(0,212,255,1) 100%);
}
img {
    z-index: 0;
    opacity: 0.9;
    padding: 50px 50px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}
/* phones screens */
@media (max-width:768px){
    img {
        width: 70%;
    }
}
.mode {
    text-align: center;
    font-size: 20px;
}
button {
    background: black;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    padding: 15px 15px;
    margin: 0px 15px;
}
.mode button:hover{
    background: tomato;
}
.mode #single:hover{
    background: darkcyan;
}
h2 {
    color: aliceblue;
    font-weight: bold;
    font-size: 35px;
}
.settings {
    display: none;
    text-align: center;
    font-size: 20px;
}
.settings i {
    cursor: pointer;
    padding: 0px 15px;

}
#setO:hover {
    color: tomato;
}
#setX:hover {
    color: darkcyan;
}
.container {
    height: 500px;
    display: none;
}
.container h1{
    padding: 0px 20px;
    text-align: center;
    color: aliceblue;
    font-weight: bold;
    font-size: 35px;
}
.container #turn{
    padding: 0px 20px;
    text-align: center;
    color: aliceblue;
    font-weight: bold;
    font-size: 35px;
}
#board{
    padding: 10px 40px;
    display: grid;
    grid-template-columns: auto auto auto;
}
#board span{
    border: 3px black solid;
    height: 90px;
    cursor: pointer;
    font-size: 60px;
    text-align: center;
}
p{
    margin: 0px;
    text-align: center;
    font-size: 50px;
    padding: 0px 20px;
}
.winner {
    color: #9AE1E5;
}
.results{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0px 20px;
}
#again {
    display: none;
    background: black;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    padding: 15px 15px;
    margin: 0px 15px;
}
#again:hover{
    background: dimgray;
}