chrome-extensions-samples/functional-samples/sample.dnr-rule-manager/manager.css

* {
    box-sizing: border-box;
}

#rulesList {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rule-item {
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 10px;
    position: relative;
}

.rule-id {
    width: 4em;
}

.condition-value {
    width: 50em;
    max-width: calc(100vw - 26px);
}

.actions {
    position: absolute;
    top: 5px;
    right: 5px;
}