apollodec/Apollo/master/sass/partials/_timeline.scss

/* ---------------------------------------------------------------------- */
/*  Timeline
/* ---------------------------------------------------------------------- */
div.timeline {
    margin: 0;
    overflow: hidden;
    position: relative;

    .columns {
        margin: 0;
        padding: 0;
        list-style: none;

        > li:nth-child(2n+1) {
            float: left;
            width: 50%;
            clear: left;

            .timeline_element {
                float: right;
                left: 10%;
                margin-right: 30px;
                left: 0;
                opacity: 1;

                &:before {
                    right: -27px;
                    top: 15px;
                }

                &:after {
                    right: -35px;
                    top: 10px;
                }
            }
        }

        > li:nth-child(2n+2) {
            float: right;
            margin-top: 20px;
            width: 50%;
            clear: right;

            .timeline_element {
                float: left;
                margin-left: 30px;
                right: 10%;
                opacity: 1;
                right: 0;

                &:before {
                    left: -27px;
                    top: 15px;
                }

                &:after {
                    left: -35px;
                    top: 10px;
                }
            }
        }
    }

    .date_separator {
        clear: both;
        height: 60px;
        position: relative;
        text-align: center;

        span {
            border-radius: 5px;
            height: 30px;
            line-height: 30px;
            margin-top: -16px;
            position: absolute;
            top: -200%;
            width: 200px;
            top: 50%;
            left: 50%;
            margin-left: -100px;
            background-color: $primary;
            color: $white;
        }
    }

    .spine {
        border-radius: 2px;
        position: absolute;
        top: 0;
        width: 4px;
        left: 50%;
        margin-left: -2px;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.1);
    }

    .column_center {
        .timeline_element {
            margin: 20px auto;
            opacity: 1;

            &:before, &:after {
                display: none;
            }
        }
    }
}

.timeline_element {
    border-radius: 5px;
    clear: both;
    margin: 30px 0;
    padding: 20px;
    opacity: 0;
    position: relative;
    transition: all 0.2s linear 0s;
    min-width: 66.6667%;
    text-shadow: none;
    box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.1);

    &.partition-white {
        border: 1px solid rgba(0, 0, 0, 0.07);

        &:hover {
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        &:after {
            background-color: $white;
        }

        &:hover:after {
            background-color: darken($lightGrey, 20%);
            border: 1px solid $white;
        }
    }

    &.partition-green {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $green;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $green;
        }
    }

    &.partition-orange {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $orange;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $orange;
        }
    }

    &.partition-blue {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $blue;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $blue;
        }
    }

    &.partition-red {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $red;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $red;
        }
    }

    &.partition-azure {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $azure;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $azure;
        }
    }

    &.partition-purple {
        border: none;
        color: $white;

        &:hover {
            border: none;
        }

        &:after {
            background-color: $purple;
        }

        &:hover:after {
            background-color: $white;
            border: 1px solid $purple;
        }
    }

    &:hover {
        box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.2);
    }

    &:before {
        content: "";
        display: block;
        height: 0;
        position: absolute;
        width: 26px;
        border-top: 1px dashed #CCCCCC;
    }

    &:after {
        border-radius: 100%;
        content: "";
        display: block;
        height: 10px;
        position: absolute;
        width: 10px;
        background-color: #BBBBBB;
        border: 1px solid #FFFFFF;
        box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2);
    }

    &:hover:after {
        z-index: 100;
        background-color: #FFFFFF;
        border: 1px solid #CCCCCC;
        z-index: 100;
    }

    .timeline_title {
        overflow: hidden;
        position: relative;
        text-transform: uppercase;
        padding-top: 10px;
        white-space: nowrap;

        h4 {
            line-height: 30px;
        }
    }

    .timeline_date {
        display: block;

        .day {
            font-size: 52px;
            letter-spacing: -2px;
        }
    }

    .timeline_content {
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .readmore {
        padding: 10px 0;
        text-align: right;
    }
}

.timeline-scrubber {
    padding: 8px 0 8px 1px;
    top: 60px;
    right: 0;
    width: 100px;
    z-index: 1;
    list-style: none;
    position: absolute;

    li {
        margin-bottom: 1px;

        &:nth-last-child(2) {
            a {
                border-color: lighten($lightGrey, 10%);
                color: lighten($lightGrey, 10%);
            }
        }

        &:last-child {
            a {
                border-color: lighten($lightGrey, 15%);
                color: lighten($lightGrey, 15%);
            }
        }
    }

    a {
        border-left: 5px solid $lightGrey;
        color: $lightGrey;
        display: block;
        font-weight: normal;
        outline: medium none;
        padding: 4px 0 4px 6px;

        &:hover {
            border-color: darken($lightGrey, 20%) !important;
            color: darken($lightGrey, 20%) !important;
        }
    }

    .selected > a {
        border-left-color: $darkGrey !important;
        color: $darkGrey !important;
        font-weight: bold !important;
    }
}

/* ie8 fixes */
.ie8 div.timeline_element:after {
    display: none;
}

.ie8 div.timeline_element:before {
    display: none;
}
/**/

.timeline-xs {
    margin: 0;
    padding: 0;
    list-style: none;

    .timeline-item {
        position: relative;
        border-left: 1px solid $grey;

        &:after {
            background-color: #fff;
            border-color: $primary;
            border-radius: 10px;
            border-style: solid;
            border-width: 1px;
            bottom: 0;
            content: "";
            height: 9px;
            left: 0;
            margin-left: -5px;
            position: absolute;
            width: 9px;
        }

        p {
            margin: 0;
            padding-bottom: 10px;
        }

        &.success {
            border-left-color: $success;

            &:after {
                border-color: $success;
            }
        }

        &.danger {
            border-left-color: $danger;

            &:after {
                border-color: $danger;
            }
        }

        &.info {
            border-left-color: $info;

            &:after {
                border-color: $info;
            }
        }

        &.warning {
            border-left-color: $warning;

            &:after {
                border-color: $warning;
            }
        }
    }

    .timeline-item:before, .timeline-item:after {
        content: " ";
        display: table;
    }

    .timeline-item:after {
        clear: both;
        bottom: auto;
        top: 4px;
    }
}

@media (max-width: $screen-sm-max) { /* 991px */
    div.timeline {
        margin: 0;

        .columns li {
            float: none !important;
            width: 100% !important;
        }
    }

    .timeline_element {
        margin: 20px auto !important;

        &:after {
            display: none;
        }

        &:before {
            display: none;
        }
    }

    .timeline-scrubber {
        display: none;
    }
}