body{
    margin:0;
    padding: 0;
    font-family: sans-serif;
    background: black;
}
.header{
    font-size: 50px;
    color:rgb(171, 165, 165);
    font-family:Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    font-weight: bold;

}
.main{
    padding: 40px;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.container{
    display: grid;
    grid-template-columns: auto auto auto;
    background: darkgrey;
}
.box{
    background: white;
    height: 150px;
    width: 150px;
    border:3px solid darkgrey;
    display: flex;
    justify-content: center;
    align-content: center;
    font-size: 100px;
    color: darkslategrey;
    cursor: pointer;
}
.reset{
    background: red;
    border-radius: 10px;
    color: white;
    font-size: 20px;
    padding: 10px 20px;
    margin-top: 40px;
    cursor: pointer;
    margin-bottom: 40px;

}