body{
  background-image: url("img/bck-img.jpg");
  min-height: 800px; 
  background-position: center; 
  background-repeat: no-repeat; 
  background-size: cover;
}
h1{
  font-size: 55px;
  color: rgb(250, 250, 250);
  text-shadow: 0px 0px 4px rgb(19, 19, 19);
  
}
.content {
  min-height: 600px;
  max-width: 600px;
  border-radius: 20px !important;
  box-shadow: 0px 0px 3px #ccc;
  opacity: 0.95;
}

.hide {
  display: none;
}

.toggle.ios,
.toggle-on.ios,
.toggle-off.ios {
  border-radius: 20px;
}

.toggle.ios .toggle-handle {
  border-radius: 20px;
}

.selected {
  box-shadow: 0 0 0 0.2rem rgba(16, 150, 170, 0.897);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}
.btn{
  min-width: 65px;
}
#inst-buttons button{
  min-width: 220px;
  min-height: 100px;
}
#showResult{
  min-width: 200px;
  min-height: 60px;
}
@media (max-width: 400px) {
  body{
    min-height: 640px;
  }
  .content{
    margin-top: 5px;
    min-height: 500px
  };
  h1{
    margin: 0;
    padding: 0;
  }
  #notes-buttons button{
    font-size: 15px;
    width: 50px;
    height: 38px;
    margin: 1.5px !important;
    }
    #inst-buttons button{
      font-size: 10px;
      min-width: 145px;
      height: 50px;
      margin: 1.3px !important;
      padding: 1.3px !important;
    }
    #inst-buttons button b{
      font-size: 18px;
      display: block;
     
    }
}