body {
}
.header {
    display: flex;
    align-items: center;
    justify-items: center;
    justify-self: center;
    margin-top: 5rem;
}
/* Square */
.space-for-square {
    width: 200px;
    height: 200px;
}
.square {
    justify-self: center;
    margin-top: 25%;
    width: 100px;
    height: 100px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    background-color: palegoldenrod;
}
.part {
    background-color: black;
    margin: 4px;
    display: inline;
}
.one, .two, .three, .four {
    position: relative;
}
.one {
    animation: slideTopLeft 0.5s infinite alternate;
}
.two {
    animation: slideTopRight 0.5s infinite alternate;
}
.three {
    animation: slideBottomLeft 0.5s infinite alternate; 
}
.four {
    animation: slideBottomRight 0.5s infinite alternate; 
}
/* Animations for squares */
@keyframes slideBottomRight {
    from {
        left: 0;
        top: 0;
    }
    to {
        left: 50px;
        top: 50px;
    }
}
@keyframes slideBottomLeft {
    from {
        right: 0;
        top: 0;
    }
    to {
        right: 50px;
        top: 50px;
    }
}
@keyframes slideTopRight {
    from {
        left: 0;
        bottom: 0;
    }
    to {
        left: 50px;
        bottom: 50px;
    }
}
@keyframes slideTopLeft {
    from {
        right: 0;
        bottom: 0;
    }
    to {
        right: 50px;
        bottom: 50px;
    }
}
/**//**//**//**//**//**//**//**//**//**//**//**//**//**//**//**//**//**/

h1 {
    /* margin-left: 6rem; */
}

main {
    justify-self: center;
    margin-top: 5rem;
}

ul {
    list-style: none;
}
li {
    padding: 2rem;
}