.about_section {
    position: relative;
}

.about_section:first-child:before {
    content: '';
    position: absolute;
    bottom: 50px;
    left: -100px;
    width: 55px;
    height: 55px;
    background: url('../images/pattern_circle_white.svg') center no-repeat;
    background-size: contain;
}

.about_section:nth-child(2):before {
    content: '';
    position: absolute;
    bottom: 50px;
    right: -115px;
    width: 65px;
    height: 65px;
    background: url('../images/pattern_triangle_white.svg') center no-repeat;
    background-size: contain;
}

.stage_01 .stage_card {
    position: relative;
}

.stage_01 .stage_card:after {
    content: '';
    position: absolute;
    bottom: 325px;
    right: -160px;
    width: 65px;
    height: 65px;
    background: url('../images/pattern_triangle_white.svg') center no-repeat;
    background-size: contain;
}

.stage_02 .stage_card {
    position: relative;
}

.stage_02 .stage_card:before {
    content: '';
    position: absolute;
    top: -150px;
    right: 150px;
    width: 55px;
    height: 55px;
    background: url('../images/pattern_circle_white.svg') center no-repeat;
    background-size: contain;
}

.stage_02 .stage_card {
    position: relative;
}

.stage_02 .stage_card:after {
    content: '';
    position: absolute;
    bottom: 15px;
    right: -360px;
    width: 125px;
    height: 125px;
    background: url('../images/pattern_dot_b_white.svg') center no-repeat;
    background-size: contain;
}

.stage_03 .stage_card {
    position: relative;
}

.stage_03 .stage_card:before {
    content: '';
    position: absolute;
    bottom: 25px;
    left: -320px;
    width: 75px;
    height: 75px;
    background: url('../images/pattern_dot_s_white.svg') center no-repeat;
    background-size: contain;
}


.stage_04 .stage_card {
    position: relative;
}

.stage_04 .stage_card:after {
    content: '';
    position: absolute;
    top: 200px;
    right: -125px;
    width: 50px;
    height: 50px;
    background: url('../images/pattern_square_white.svg') center no-repeat;
    background-size: contain;
}


.course .main_title {
    position: relative;
}

.course .main_title:after {
    content: '';
    position: absolute;
    bottom: 50px;
    right: 50px;
    width: 65px;
    height: 65px;
    background: url('../images/pattern_triangle_gray.svg') center no-repeat;
    background-size: contain;
}


.course_section {
    position: relative;
}

.course_section:nth-child(2):before {
    content: '';
    position: absolute;
    bottom: 150px;
    left: -175px;
    width: 75px;
    height: 75px;
    background: url('../images/pattern_dot_s_gray.svg') center no-repeat;
    background-size: contain;
}

.course_section:nth-child(2):after {
    content: '';
    position: absolute;
    bottom: 25px;
    right: -250px;
    width: 125px;
    height: 125px;
    background: url('../images/pattern_dot_b_gray.svg') center no-repeat;
    background-size: contain;
}

.course_section:last-child:before {
    content: '';
    position: absolute;
    bottom: 200px;
    left: -125px;
    width: 50px;
    height: 50px;
    background: url('../images/pattern_square_gray.svg') center no-repeat;
    background-size: contain;
}


.achievement .main_title {
    position: relative;
}

.achievement .main_title:after {
    content: '';
    position: absolute;
    bottom: 25px;
    right: -250px;
    width: 125px;
    height: 125px;
    background: url('../images/pattern_dot_b_white.svg') center no-repeat;
    background-size: contain;
}

.achievement_section {
    position: relative;
}

.achievement_section:before {
    content: '';
    position: absolute;
    top: -50px;
    left: 25px;
    width: 55px;
    height: 55px;
    background: url('../images/pattern_circle_white.svg') center no-repeat;
    background-size: contain;
}

.coach .main_title {
    position: relative;
}

.coach .main_title:before {
    content: '';
    position: absolute;
    bottom: 50px;
    left: 200px;
    width: 75px;
    height: 75px;
    background: url('../images/pattern_dot_s_white.svg') center no-repeat;
    background-size: contain;
}

.coach .main_title:after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -115px;
    width: 65px;
    height: 65px;
    background: url('../images/pattern_triangle_white.svg') center no-repeat;
    background-size: contain;
}


@media screen and (max-width: 1023px) {
    .about_section:first-child:before,
    .about_section:nth-child(2):before,
    .stage_01 .stage_card:after,
    .stage_02 .stage_card:before,
    .stage_02 .stage_card:after,
    .stage_03 .stage_card:before,
    .stage_04 .stage_card:after,
    .course .main_title:after,
    .course_section:nth-child(2):before,
    .course_section:nth-child(2):after,
    .course_section:last-child:before,
    .achievement .main_title:after,
    .achievement_section:before,
    .coach .main_title:before,
    .coach .main_title:after {
        display: none;
    }
}