<div class="container">
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
    <div class="elem">
        <div></div>
    </div>
</div>

.container {
    column-count: 3;
    column-gap: 30px;
    column-rule: 1px solid purple;
    width: 80%;
    margin: 0 auto;
}

.elem {
    display: inline-block;
    margin-bottom: 30px;
    height: 100px;
    background-color: purple;
    width: 100%;
}

.elem:nth-child(1),
.elem:nth-child(2),
.elem:nth-child(5),
.elem:nth-child(6) {
    margin: 0 auto initial;
}

.elem:nth-child(5) {
    height: 140px;
}

.elem:nth-child(2) {
    height: 200px;
}

.elem div {
    height: 60px;
    background-color: yellowgreen;
}