#ta-parent {
    padding: 1vw 4vw 4vw 4vw;
    overflow: hidden;
    position: relative;
}

    #ta-parent .train {
        display: flex;
        justify-content: center;
    }

        #ta-parent .train .child {
            width: 80%;
            /*margin: auto;*/
            display: flex;
            flex-direction: column;
            align-items: center;
        }

            #ta-parent .train .child .bottom {
                display: flex;
                align-items: center;
                width: 90%;
                margin-top: 2vw;
            }

                #ta-parent .train .child .bottom .bottom-child {
                    display: flex;
                    flex-direction: column;
                    justify-content: center;
                    flex: 0 0 50%;
                }

                    #ta-parent .train .child .bottom .bottom-child img.icon {
                        width: 3vw;
                    }

                    #ta-parent .train .child .bottom .bottom-child .title {
                        font-size: 1.25vw;
                        font-weight: bold;
                        color: #133880;
                    }

                    #ta-parent .train .child .bottom .bottom-child .text {
                        font-size: 1.15vw;
                    }

    #ta-parent .child .title {
        color: #0d2c6c;
        font-size: 3.5vw;
        font-weight: 900;
        line-height: 2vw;
        margin-top: 2vw;
    }

    #ta-parent .child:nth-of-type(2) .title {
        font-size: 2.5vw;
        margin-top: 0;
        width: 95%;
    }

    #ta-parent .child img.icon {
        width: 5vw;
    }

    #ta-parent .child .sub-title {
        font-size: 2vw;
        font-weight: 800;
        color: #414143;
        margin-bottom: 2vw;
    }

    #ta-parent .child .text {
        font-size: 1.25vw;
        color: #414143;
        width: 90%;
        background: rgba(255, 255, 255, 0.5);
    }

    #ta-parent .child .video-img {
        width: 100%;
        cursor: pointer;
    }

    #ta-parent .achieve {
        display: flex;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        margin-bottom: 5vw;
    }

        #ta-parent .achieve .child {
            width: 70%;
            margin: auto;
        }

    #ta-parent .child.slider {
        position: relative;
        text-align: left;
    }

        #ta-parent .child.slider .arrow-left {
            position: absolute;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 3vw;
            height: 3vw;
            background: #ee2e24;
            border-radius: 0.25vw;
            left: -5vw;
            bottom: 19vw;
            cursor: pointer;
            z-index: 1;
        }

            #ta-parent .child.slider .arrow-left img, #ta-parent .child.slider .arrow-right img {
                width: 1.5vw;
                height: 2vw;
            }

        #ta-parent .child.slider .arrow-right {
            position: absolute;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 3vw;
            height: 3vw;
            background: #ee2e24;
            border-radius: 0.25vw;
            right: -5vw;
            bottom: 19vw;
            cursor: pointer;
            z-index: 1;
        }

        #ta-parent .child.slider .video-img {
            display: none;
        }

            #ta-parent .child.slider .video-img.first {
                display: block;
            }

    #ta-parent .koru-1, #ta-parent .koru-2, #ta-parent .koru-3 {
        position: absolute;
        z-index: -1;
        width: 39vw;
    }

    #ta-parent .koru-1 {
        top: 3vw;
        left: -12.5vw;
    }

    #ta-parent .koru-2 {
        top: 25vw;
        right: -22vw;
    }

    #ta-parent .koru-3 {
        bottom: -27vw;
        left: -13vw;
    }

.video-popup {
    background: rgba(0, 0, 0, 0.6);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: none;
}

    .video-popup iframe {
        width: 80vw;
        height: 44vw;
        position: relative;
        margin: auto;
        display: none;
    }

#ta-achieve .circles {
    margin-top: 1vw;
    text-align: center;
    width: 100%;
}

    #ta-achieve .circles img {
        width: 2vw;
        cursor: pointer;
    }

.video-popup .popup-left {
    position: absolute;
    left: 5vw;
    top: 25vw;
    height: 5vw;
    cursor: pointer;
}

.video-popup .popup-right {
    position: absolute;
    right: 5vw;
    top: 25vw;
    height: 5vw;
    cursor: pointer;
}

.video-popup .popup-close {
    position: absolute;
    width: 2vw;
    right: 2vw;
    top: 2vw;
    cursor: pointer;
}

@media screen and (max-width: 1028px) {
    #ta-parent {
        margin-top: 3vw;
    }

    #ta-parent .train, #ta-parent .achieve {
        flex-direction: column;
    }    

        #ta-parent .train .child:nth-child(odd) {
            order: 2;
            margin: 3vw 0;
        }

        #ta-parent .train .child, #ta-parent .achieve .child {
            width: 100%;
            text-align: center;
        }

    #ta-parent .child .title, #ta-parent .child .sub-title, #ta-parent .child .text {
        width: 100%;
    }

    #ta-parent .child .title {
        font-size: 7vw;
        line-height: 5vw;
    }

    #ta-parent .child .sub-title {
        font-size: 4vw;
    }

    #ta-parent .child .text {
        font-size: 3.25vw;
    }

    #ta-parent .child.slider {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        width: 88%;
    }

        #ta-parent .child.slider .video-img {
            margin-top: 3vw;
        }

        #ta-parent .child.slider .arrow-left img, #ta-parent .child.slider .arrow-right img {
            width: 2.5vw;
            height: 2.75vw;
        }

       #ta-parent .child.slider .arrow-left {
           width: 5vw;
           height: 5.5vw;
           left: -7vw;
           bottom: 30vw;
           border-radius: 0.5vw;
       }

       #ta-parent .child.slider .arrow-right {
           width: 5vw;
           height: 5.5vw;
           right: -7vw;
           bottom: 30vw;
           border-radius: 0.5vw;
       }

        #ta-parent .child:nth-of-type(2) .title {
            font-size: 7vw;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        #ta-parent .child:nth-of-type(2) .text {
            font-size: 4.25vw;
            margin: 3vw 0;
        }

        #ta-parent .child img.icon {
            width: 15vw;
        }

        #ta-parent .train .child .bottom .bottom-child {
            align-items: center;
            min-height: 50vw;
            justify-content: start;
        }

            #ta-parent .train .child .bottom .bottom-child img.icon {
                width: 10vw;
            }

            #ta-parent .train .child .bottom .bottom-child .title {
                font-size: 4.25vw;
                margin-top: 2vw;
            }

            #ta-parent .train .child .bottom .bottom-child .text {
                font-size: 3.5vw;
            }

    #ta-parent .koru-1 {
        top: 112.25vw;
        left: -34.5vw;
        width: 70vw;
    }

    #ta-parent .koru-2 {
        top: 20vw;
        right: -44vw;
        width: 70vw;
    }

    #ta-parent .koru-3 {
        bottom: -52vw;
        left: -35vw;
        width: 70vw;
    }

    #ta-achieve .circles {
        margin-top: 3vw;
    }

        #ta-achieve .circles img {
            width: 5vw;
            margin: 0;
        }

    .video-popup .popup-left {
        left: 2vw;
        top: 47vh;
        height: 10vw;
    }

    .video-popup .popup-right {
        right: 2vw;
        top: 47vh;
        height: 10vw;
    }

    .video-popup .popup-close {
        width: 6vw;
        right: 3vw;
        top: 30vh;
    }
}