/* style.css */
.my-custom-block {
    padding: 20px;
    background: #ececec;
    border: 1px solid #161616;
    display: flex;
    justify-content: space-between;
}

.my-custom-block div {
    flex: 1;
}

.my-custom-block div:first-child {
    margin-right: 10px;
}

.my-custom-block div:last-child {
    margin-left: 10px;
}