style.css

body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 14px;
}

/* Styling for h2 */
h2 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

/* Styling for select */
select {
    padding: 6px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

/* Styling for input */
input {
    padding: 6px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

div.hidden {
    display: none;
}

div.wrapper {
    position: relative;
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    height: 70vh; /* vh refers to viewport height */
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
}

.controls {
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
}

.sliders {
    padding-top: 20px;
}

/* Range slider container */
.range {
    display: flex;
    flex-direction: row;
    justify-content: left;
    align-items: center;
}

/* Slider field container */
.field {
    display: flex;
    align-items: center;
    padding-left: 10px;
}

/* Slider value on left side */
.value.left {
    margin-right: 20px;
}

/* Slider value on right side */
.value.right {
    margin-left: 20px;
}

/* Range slider track */
input[type="range"] {
    width: 100%;
    height: 10px;
    background-color: #ddd;
    border-radius: 5px;
    outline: none;
}

/* Range slider thumb */
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background-color: #4caf50;
    border-radius: 50%;
    cursor: pointer;
}

/* Range slider thumb on hover */
input[type="range"]::-webkit-slider-thumb:hover {
    background-color: #3e8e41;
}

/* Range slider thumb on active state */
input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(1.2);
}