css.css

body{
    background: rgb(2,0,36);
background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(17,192,103,0.856816054058342) 35%, rgba(0,212,255,1) 100%); 
    font-family: 'Crimson Pro', serif;
    font-size: 48px;
    color :white ;
    padding: 0px;
    margin: 0px;
    display: flex;
    justify-content: center;
    font-size: 2rem;
    color: white;
}
h1{
    text-align: center;
}


.slidecontainer {
  width: 100%; /* Width of the outside container */
}

/* The slider itself */
.slider {
  -webkit-appearance: none;  /* Override default CSS styles */
  appearance: none;
  width: 100%; /* Full-width */
  height: 25px; /* Specified height */
  background: #ffffff /* white background */
  outline: none; /* Remove outline */
  opacity: 0.7; /* Set transparency (for mouse-over effects on hover) */
  -webkit-transition: .2s; /* 0.2 seconds transition on hover */
  transition: opacity .2s;
  
}

/* Mouse-over effects */
.slider:hover {
  opacity: 1; /* Fully shown on mouse-over */
}

/* The slider handle (use -webkit- (Chrome, Opera, Safari, Edge) and -moz- (Firefox) to override default look) */
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; /* Override default look */
  appearance: none;
  width: 25px; /* Set a specific slider handle width */
  height: 25px; /* Slider handle height */
  background: #020024; /* Green background */
  cursor: pointer; /* Cursor on hover */
}

.slider::-moz-range-thumb {
  width: 25px; /* Set a specific slider handle width */
  height: 25px; /* Slider handle height */
  background: #221d6b; /* dark blue background */
  cursor: pointer; /* Cursor on hover */
}