dito-front/src/app/timeline/timeline.component.scss

:host {
    background: #eff1fd;
    display: flex;
    padding: 32px 19px 0px 32px;
    width: 500px;
    margin: 0 auto;

    ul {
        display: flex;
        list-style: none;
        margin: 0px;
        padding: 0px;
    }

    * {
        box-sizing: border-box;
    }
}

.timeline {
    font-family: 'Roboto', sans-serif !important;
    flex-direction: column;
    border-left: #d6d9e0 2px solid;
    user-select: none;

    .event {
        color: #000000a8;
        margin: 34px 29px 0px;
        position: relative;
        width: 100%;
        display: flex;
        flex-direction: column;
        background: #f8f8f8;
        border-radius: 5px;
        box-shadow: 0 0 5px #0000004d;
        width: 100%;
        font-size: 14px;

        &:last-child {
            margin-bottom: 34px;
        }

        .event-decorators {
            position: absolute;
            border: 1px solid blue;
        }

        .event-header {
            background: #fff;
            flex-direction: row;
            height: 44px;
            width: 100%;
            align-items: center;
            justify-content: space-between;
            padding: 0px 24px;
            box-sizing: border-box;
            border-top-left-radius: 5px;
            border-top-right-radius: 5px;

            li {
                display: flex;
                align-items: center;
                justify-content: center;

                i {
                    margin-right: 5px;
                    transform: translateY(2px);
                    color: #00000073;
                }
            }
        }

        .event-itens {
            display: flex;
            flex-direction: column;
            width: 100%;
            padding: 4px 22px 8px;

            li {
                height: 32px;
                display: flex;
                align-items: center;
                justify-content: space-between;
                box-sizing: border-box;

                &:first-child {
                    color: #5c5c5c;
                    font-weight: 600;
                }

                &:not(:last-child) {
                    border-bottom: 1px solid #0000001a;
                }
            }
        }

        .event-item {}

        .event-circle {
            position: absolute;
            height: 25px;
            color: #55a469;
            width: 25px;
            border: 2px solid #d6d9e0;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f8f8f8;
            box-sizing: border-box;
            font-size: 28px;
            top: 10px;
            left: -44px;
        }

        &::before {
            box-sizing: border-box;
            width: 0;
            height: 0;
            margin-top: 10px;
            content: '';
            transform: rotate(45deg);
            transform-origin: 12px 18px;
            border: 8px solid transparent;
            // border-bottom-color: #f8f8f8;
            // border-left-color: #f8f8f8;
            border-bottom-color: #fff;
            border-left-color: #fff;
            box-shadow: -2px 3px 4px -3px rgba(0, 0, 0, 0.4);
            top: 2px;
            left: -14px;
            position: absolute;
            border-radius: 1px;
        }
    }
}