@charset "UTF-8";
*{
    margin:0;
}
#num-container{
    width:320px;
    display: flex;
    flex-wrap: wrap;
}

.num-contents{
    display:inline-block;
    background:blue;
    color:#fff;
    width:calc(100% / 5);
    text-align: center;
    line-height: 40px;
}