.sub_box {
    width: calc(33% - 64px);
    float: left;
    padding: 20px;
    border: 2px solid #ccc;
    text-align: left;
    min-height: 200px;
    border-radius: 10px;
    margin: 10px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 22px;
}
h3, h4 {
    margin: 0px;
    padding: 0px;
}
