styles.css

body, html {
  margin: 0px;
  background-color: #212032;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  color: white;
  height: 100%;
}

.title {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 100vh;
  font-size: 5em;
}

.fscontainer {
  width:100%;height:100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fsimage {
  display: block;
  width: 50%;
  height: auto;
}

.info {
  background-color: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 15%;
  left: 5%;
  font-size: 2em;
  padding: 2%;
}

.slidecontainer {
  position: absolute;
  width: 50%;
  margin-left: 25%;
  bottom: 15%;
}

.slider {
  width: 100%;
  border-radius: 5px;
  background: #d3d3d3;
  color: white;
}

.tvaluetext {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  font-size: medium;
  color: #f07508;
}

input[type="range"] {
  -webkit-appearance: none;
  margin-right: 15px;
  height: 3px;
  background: lightgray;
  border-radius: 5px;
  background-image: linear-gradient(#f07508, #f07508);
  background-size: 0% 100%;
  background-repeat: no-repeat;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: #f07508;
  cursor: ew-resize;
  box-shadow: 0 0 2px 0 #555;
}

input[type="range"]::-webkit-slider-runnable-track {
  -webkit-appearance: none;
  box-shadow: none;
  border: none;
  background: transparent;
}