html {
   background-image: url(../images/teren.png);
    background-position: center;
    background-size: cover;
    background-repeat: repeat-y;
}


.main-content {
    margin-left: 0px !important ;
}
.axis path,
.axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}

.area {
    stroke: blue;
    fill: red;
}
@media (min-width: 768px)
.main-content {
    margin-left: 0px !important;
}

#container{
  background: blue;
  width: 50px;
  height: 50px;
}
 .btn{
  text-decoration:none;
  background: grey;
  color: #fff;
  padding: 5px;
  margin: 5px;
  margin-bottom: 10px;
}
.btns{
  height: 50px;
  display:block;
  padding: 3px;
}