html{
    background: #f6f6f6;
    height: 100%;
}
body{
    background: none;
    padding: 1em
}
.jumbotron{
    margin: 1em 0;
}
.slidecontainer {
    width: 100%;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 15px;
    border-radius: 5px;  
    background: #d3d3d3;
    outline: none;
    opacity: 0.7;
    -webkit-transition: .2s;
    transition: opacity .2s;
  }
  
.slider::-webkit-slider-thumb {
-webkit-appearance: none;
appearance: none;
width: 25px;
height: 25px;
border-radius: 50%; 
background: #4CAF50;
cursor: pointer;
}

.slider::-moz-range-thumb {
width: 25px;
height: 25px;
border-radius: 50%;
background: #4CAF50;
cursor: pointer;
}
.container{
    text-align: center;
}
.row{
    height: auto;
    margin: 1em 0;
}
 
.col-sm{
    padding: 0 !important;
}
.card{
    height: 100%;
}