.form-calc {
    align-items: center;
}

.main-form {
    margin-top: 1%;
    padding: 5%;
    background: url("/assets/img/calc.jpg") top center;
    background-position:bottom;
  background-size:cover;
  position: relative;
  z-index: 2;
  
  padding-bottom: 1%;
  overflow: hidden;
    border-radius: 10px;
    
   
}

.main-form:before {
    content: "";
    background: rgba(196, 102, 2, 0.55);
    position: absolute;
    bottom: 0;
    top: 0;
    left: 0;
    right: 0;
  }

.form-group label {
    color: aliceblue;
    text-shadow: 1px 1px 1px black;
    
}

.form-control {
  margin-right: 5%;
}

.btn-pos  {
    position:absolute;
     bottom: 950%;
     left:50%;
     
}

.result-calc{

  font-size: 100px;
  text-shadow: 1px 1px 1px black;
  position:absolute;
  bottom: 750%;
  left:10%;
  border: 1px solid rgb(0, 0, 0);
  text-align: center;
  color: #ffffff;
  border-radius: 10px;
  background-color: #c46602c9
  ;
  
}

.btn-design {
    font-size: 36px;
    background-color: #c46602;
    color: aliceblue;
    text-shadow: 1px 1px 1px black;
    padding: 5%;
    
}

.btn-design:hover {
    background-color: #ff6a00;
    color: rgb(222, 159, 0);
    text-shadow: 1px 1px 1px black;
}
