body{
    margin: 0;
}
*{
    box-sizing: border-box;
}
.box{
    background-color: rgb(83, 109, 83);
    width: 300px;
    height: 150px;
    padding: 20px;
    box-sizing: border-box;
    border: 10px solid rgb(12, 12, 12);
     border-right: 10px dashed rgb(51, 90, 51);
     border-bottom: 10px double blue;
     margin: 20px;

}
.container{
    background-color: bisque;
    width: 960px;
    padding: 10px;
    margin: 0 auto;
    
}