html, body {
  background-color: #fff;
  width: 100%;
  height: 100%;
  margin: 0;
  border: 0;
  outline: 0;
}

.main {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.oppstart {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
/* Centered text */
.centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.navbar
 {
     border-bottom:1px solid #999;
 }

 .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: #0275d8;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #0275d8;
  cursor: pointer;
}