styles.css

body{
    background-color: black;
    color: white;
    text-align: center;
    margin: 0;
    height: 70vh;
    font-family: Arial, Helvetica, sans-serif;
}

#topContainer{
    height: 100%;
    width:  90%; 
    margin-left: auto;
    margin-right: auto;
    background-color: black;
    display: flex;
    vertical-align: bottom;
    align-items: flex-top;
}

.bar{
    background-color:aqua;
    flex-grow: 1;
    flex-basis: 1;
    height: 100%;
    display: inline-block;
    margin-right: 0.05%;
    margin-left: 0.05%; 
    color: black;
}

.selected-bar{
    background-color:red;
    flex-grow: 1;
    flex-basis: 1;
    height: 100%;
    display: inline-block;
    margin-right: 0.05%;
    margin-left: 0.05%;
}
.end-bar{
    background-color: rgb(65, 224, 65);
    flex-grow: 1;
    flex-basis: 1;
    height: 100%;
    display: inline-block;
    margin-right: 0.05%;
    margin-left: 0.05%;
}
button{
    background-color: black;
    border-radius: 20px;
    color:white;
    border-color: aqua;
    margin: 10px;
    width: 130px;
    height: 25px;
    }
button:hover{
background-color: rgb(17, 36, 37);
}
.slide-outer-container{
width: 90%;
margin: 10px auto 10px auto;
display: flex;
max-width: 925px;
}
.button-container{
    width: 90%;
    margin: 10px auto 10px auto;
}

.slide-inner-container{
    width: 50%;
    margin: 0 10px 0 10px;
}
.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 10px;
    border-radius: 5px;
    background: rgb(22, 37, 44);
   

   
    -webkit-transition: .2s;
    transition: opacity .2s;
  }
  
  .slider:hover {
    opacity: 1;
    background: rgb(35, 54, 62);
  }
  .slider::-moz-range-thumb {
    width: 30px;
    height: 10px;
    border-radius: 20px;
    background: aqua;
    cursor: pointer;
    border-width: 0;
  }