@charset "utf-8";



/*メインの設定*/

main
{
    position: relative;
    width: 100%;
    top: 0;
    min-height: 100vh;
}

body
{
    background-color: black;
}
/*メインコンテンツの設定*/
.container
{
    margin: 0;
    padding: 0;
}


#box-1
{
    position: relative;
    width: 100%;
    min-height: calc(100vh - 70px);
    padding: 0 0 5px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url(/images/back-top.jpg);
    background-size: cover;
    background-position: center;
    box-sizing: border-box;
    overflow: hidden;
}
    #c-img-1
    {
        position: fixed;
        width: 85vw;
        mix-blend-mode: difference;
    }
    #center-img-un
    {
        position: absolute;
        width: 100%;
        bottom: 0;
    }
#box-2
{
    position: relative;
    width: 100%;
    padding: 5% 2% 3% 2%;
    text-align: center;
    background-color: black;
    color: rgb(255, 255, 255);
    box-sizing: border-box;
}
    #box-2 h1{
        padding: 2% 0;
    }
    #box-2 p
    {
        padding: 1% 5%;
    }
    #box-2 #btn1
    {
        zoom: 0.8;
        margin: 1% auto;
    }

#box-4
{
    position: relative;
    width: 100%;
    display: flex;
    background-color: black;
    overflow: hidden;
}
#box-4 video
{
    width: 100%;
}

/*タブレット用（以下）設定*/
@media screen and (max-width: 960px)
{
    #box-1
    {
        min-height: calc(100vh - 110px);
    }
    #fixed-box
    {
        height: calc(100vh - 70px);
    }
}
/*スマホ用設定*/
@media screen and (max-width: 520px)
{
    #fixed-box
{
    width: 100%;
    padding: 0 1%;
}
}