activity-list.less

.activity-list {
    .list-item {
        margin-top: 10px;
    }
    .description {
        .editor {
            display: inline-block;
            vertical-align: top;
            width: 100%;
        }
        .index + .editor {
            width: ~"calc(100% - 50px)";
        }
    }
}