body {
    margin-top: 4%;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    min-height: 90vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
a {
    position: fixed;
    top: 3%;
    left: 2%;
}
.box {
    display: flex;
    gap: 50%;
    flex-direction: column;
    flex-wrap: wrap;
    background-color: #ffffff;
    margin: 0 auto;
    padding: 0 20px;
    border: 1px solid #888;
    width: 80%;
    height: 80vh;
    border-radius: 25px;
    cursor: pointer;
    justify-content: center;
    align-items: center;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}
.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.window {
    display: none;
    position: fixed;
    z-index: 1;
    border:  solid 1px black;
    width: 80%;
    height: 82%;
    background-color: #ffffff;
    filter: drop-shadow(-1px 4px 5px rgb(192, 192, 192));
}

#circles {
    display: flex;
    gap: 10px;
    margin: 5px;
}
#circles div {
    width: 10px;
    aspect-ratio: 1/1;
    border-radius: 50%;
}
#red {
    background-color: red;
}
#red:hover {
    background-color: rgb(255, 97, 97);
}
#yellow {
    background-color: rgb(255, 174, 0);
}
#green {
    background-color: green;
}