*{
    box-sizing: border-box;
}
body{
    background: rgb(12, 13, 13);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;

}
.container{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 400px;

}
.square{
    background: rgb(36, 38, 39);
    box-shadow: 0 0 2px black;
    height: 15px;
    width: 15px;
    margin: 2px;
    transition: 3s ease;

}
.square:hover{
    transition-duration: 0s;
}