.welcome_div{
    height: 100vh;
    padding: 0;
    margin: 0;
    position: relative;
    color: white;
    background: black;
}
.welcome_imgs{
    height: 100vh;
    position: relative;
    padding: 0;
    margin: 0;
    z-index: 1;
}
.welcome_imgs img{
    position: absolute;
    object-fit: cover;
    height: 100vh;
    width: 100%;
}
.welcome_info{
    position: absolute;
    width: var(--content_div_w);
    padding: 25px 35px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, .2);
    -webkit-box-shadow: 0px 0px 30px 0px rgba(0, 0, 0, .8);
    -moz-box-shadow: 0px 0px 30px 0px rgba(0, 0, 0, .8);
    box-shadow: 0px 0px 30px 0px rgba(0, 0, 0, .8);
    z-index: 2;
    user-select: none;
}
.welcome_info_close{
    position: absolute;
    top : 15px;
    right: 20px;
    background: none;
    border: none;
    color: rgba(255, 255, 255, .6);
    font-size: var(--font_40);
}
.welcome_info_close:hover{
    color: rgba(255, 255, 255, 1);
}
.welcome_info_open_icon{
    position: absolute;
    top : 20px;
    left: 20px;
    border: none;
    color: black;
    font-size: 20px;
    background: rgba(255, 255, 255, .6);
    border-radius: 50px;
    height: var(--logo_v2_h);
    width: var(--logo_v2_w);
    display: flex;
    justify-content: center;
    align-items: center;
}
.welcome_info_logo{
    display: flex;
    justify-content: center;
    padding-bottom: 25px;
}
.welcome_info_logo img{
    height: var(--logo_v1_h);
}
.welcome_info_content h3{
    padding-top: 15px;
    text-align: center;
    font-size: var(--font_30);
}
.welcome_info_content p{
    text-align: center;
    font-size: var(--font_18);
}
.short_line{
    width: 150px;
    border-bottom: 1px solid rgba(255, 255, 255, .4);
    content: "";
    margin: auto;
}
.welcome_controller{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    background: linear-gradient(to right, rgba(0, 0, 0, .5), transparent);
    padding: 30px 40px 30px 0;
}
.welcome_photo_control{
    padding: 15px 0px;
}
.welcome_photo_control_btns{
    padding: 10px 15px;
}
.active_photo_btn{
    height: var(--logo_v3_h);
    width: var(--logo_v3_w);
    background: var(--primary_color_75);
    content: "";
    margin: 5px 0;
    border: none;
    display: block;
}
.active_photo_btn:hover{
    background: var(--primary_color);
}
.photo_btn{
    height: var(--logo_v3_h);
    width: var(--logo_v3_w);
    background: rgba(255, 255, 255, .1);
    content: "";
    margin: 5px 0;
    border: none;
    display: block;
}
.photo_btn:hover{
    background: rgba(255, 255, 255, .3);
}
.welcome_form_btn{
    margin-left: 15px;
    background: none;
    border: 1px solid white;
    color: white;
    padding: 5px 8px;
    font-size: var(--font_16);
}
.welcome_form_btn:hover{
    background: white;
    color: black;
}
.welcome_info_open{
    margin-left: 15px;
    height: var(--logo_v2_h);
    width: var(--logo_v2_w);
    border-radius: 50px;
    background: white;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    color: black;
    font-size: var(--font_20);
}
.welcome_info_open:hover{
    background: var(--primary_color);
}
.short_left_line{
    width: 90px;
    border-bottom: 1px solid rgba(255, 255, 255, .2);
    content: "";
}
.w_s_img{
    opacity: 0;
}
.collapse_img{
    opacity: 0;
    transition: opacity 1s;
}
.extend_img{
    opacity: 1;
    transition: opacity 1s;
}
.collapse_text{
    opacity: 0;
    transition: opacity 1s;
}
.extend_text{
    opacity: 1;
    transition: opacity 1s;
}
.collapse_text > .welcome_info_close{
    display: none;
}

@media only screen and (max-width: 1200px) and (min-width: 1000px){
    .welcome_controller{
        display: none;
    }
    .welcome_info_close{
        display: none;
    }
    .collapse_text{
        opacity: 1;
        transition: opacity 1s;
    }
}
@media only screen and (max-width: 1000px) and (min-width: 800px){
    .welcome_controller{
        display: none;
    }
    .welcome_info_close{
        display: none;
    }
    .collapse_text{
        opacity: 1;
        transition: opacity 1s;
    }
}
@media only screen and (max-width: 800px) and (min-width: 600px){
    .welcome_controller{
        display: none;
    }
    .welcome_info_close{
        display: none;
    }
    .collapse_text{
        opacity: 1;
        transition: opacity 1s;
    }
    .welcome_info{
        top: auto;
        left: 0;
        bottom: 0;
        right: 0;
        width: auto;
        transform: none;
        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);
        background: rgba(0, 0, 0, .4);
        -webkit-box-shadow: none;
        -moz-box-shadow: none;
        box-shadow: none;
    }
}
@media only screen and (max-width: 600px) and (min-width: 430px){
    br{
        content: "";
    }
    .break_here{
        display: block;
    }
    .welcome_controller{
        display: none;
    }
    .welcome_info_close{
        display: none;
    }
    .collapse_text{
        opacity: 1;
        transition: opacity 1s;
    }
    .welcome_info{
        top: auto;
        left: 0;
        bottom: 0;
        right: 0;
        width: auto;
        transform: none;
        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);
        background: rgba(0, 0, 0, .4);
        -webkit-box-shadow: none;
        -moz-box-shadow: none;
        box-shadow: none;
    }
}
@media only screen and (max-width: 430px) and (min-width: 360px){
    br{
        content: "";
    }
    .break_here{
        display: block;
    }
    .welcome_controller{
        display: none;
    }
    .welcome_info_close{
        display: none;
    }
    .collapse_text{
        opacity: 1;
        transition: opacity 1s;
    }
    .welcome_info{
        top: auto;
        left: 0;
        bottom: 0;
        right: 0;
        width: auto;
        transform: none;
        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);
        background: rgba(0, 0, 0, .4);
        -webkit-box-shadow: none;
        -moz-box-shadow: none;
        box-shadow: none;
    }
}