#spDiv {
    width : 80%;
    display:flex;
    justify-content: center;
    align-items: center;

    margin-bottom: 40px;
}
#spDiv > span {
    display: inline-flex;
    justify-content: center;
    align-items: center;

    width: 60px;
    height: 60px;

    margin: 5px;
    border-radius: 50%;
    font-weight: bold;
}
.sp0 {
    background-color: blue;
    color: white;
}
.sp1 {
    background-color: red;
    color: white;
}
.sp2 {
    background-color: green;
    color: white;
}
.sp3 {
    background-color: purple;
    color: white;
}
.sp4 {
    background-color:brown;
    color: white;
}
.spplus {
    color: black;
    font-size: 25px;
}