body {
    background-image: url(picture/back4.jpg);
    background-repeat: no-repeat;
    background-attachment: fixed;
}

div.buttom1{
    float: none;
    width: 190px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom2{
    float: none;
    width: 190px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom3{
    float: none;
    width: 190px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom4{
    float: none;
    width: 190px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttomabout{
    float: none;
    width: 200px;
    border: 0px solid blue;
    max-width: 100%;
}
div.video{
    float: none;
    width: 600px;
    border: 0px solid blue;
    max-width: 100%;
}






@media screen and (min-width: 950px){
 body {
    background-image: url(picture/back4.jpg);
    background-repeat: no-repeat;
    background-attachment: fixed;
}
div.buttom1{
    margin-right: auto;
    margin-top: auto;
    float: right;
    width: 300px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom2{
    margin-right: -300;
    margin-top: 102;
    float: right;
    width: 300px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom3{
    margin-right: -300;
    margin-top: 204;
    float: right;
    width: 300px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttom4{
    margin-right: -300;
    margin-top: 306;
    float: right;
    width: 300px;
    border: 0px solid blue;
    max-width: 100%;
}
div.buttomabout{
    margin-right: -300;
    margin-top: 408;
    float: right;
    width: 300px;
    border: 0px solid blue;
    max-width: 100%;
}   
    div.video{
    margin-right: 300;
    margin-top: auto;
    float: none;
    width: auto;
    height: auto;
    border: 0px solid blue;
    max-width: 100%;
}
    
    
    
    
    
    
}