.home{
    width:100%;
    height:100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;   
}

.home .sectionContentBox{
    width:100%;
    min-height:1000px;
    background-image:url('../image/bg.png');
    background-repeat: no-repeat;
    background-size:cover;
}
@media only screen and (min-width: 320px){
    .home .mainBox{
        flex:1;
        margin-top:0px;
    }
    .externalLinksBox{
        position:fixed;
        width:40px;
        right:0;
        z-index:1000;
        top:50%;
        transform: translateY(-50%); 
    }
    .externalLinksBox>a{
        margin-bottom:20px;
        display:block;
    }
    .externalLinksBox>a>img{
        width:40px;
    }
    .externalLinksBox>.nowSignUp{
        background-color:#ff672d;
        color:#fff;
        font-size:12px;
        height:40px;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
}
@media only screen and (min-width: 768px){
    .home .mainBox{
        flex:1;
        margin-top:0px;
    }
    .externalLinksBox{
        position:fixed;
        width:60px;
        right:0;
        z-index:1000;
        top:50%;
        transform: translateY(-50%); 
    }
    .externalLinksBox>a{
        margin-bottom:20px;
        display:block;
    }
    .externalLinksBox>a>img{
        width:60px;
    }
    .externalLinksBox>.nowSignUp{
        background-color:#ff672d;
        color:#fff;
        font-size:14px;
        height:40px;
        display: flex;
        justify-content: center;
        align-items: center;
    }
}
@media only screen and (min-width: 1024px){
    .home .mainBox{
        flex:1;
        margin-top:60px;
    }
    .externalLinksBox{
        position:fixed;
        width:80px;
        right:0;
        z-index:1000;
        top:50%;
        transform: translateY(-50%); 
    }
    .externalLinksBox>a{
        margin-bottom:20px;
        display:block;
    }
    .externalLinksBox>a>img{
        width:80px;
    }
    .externalLinksBox>.nowSignUp{
        display:none;
    }
}