body {
    background: #f4f6f9;
    padding: 20px;
}

section {
    background: white;
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 10px;
}

button {
    margin-top: 10px;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    background: rgb(73, 216, 73);
    color: white;
    font-size: 14px;
    cursor: pointer;
    transition: 0.2s;
}

/* Інпут */
input {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
    margin-right: 10px;
}
#box {
    width: 50px;
    height: 50px;
    background: blue;
    position: relative;
    margin-top: 15px;
    border-radius: 10px;
}
#target {
    background: #ff5a5f;
}