* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body{
    font-family: tahoma, arial;
}

.slider-container{
    margin: 10px auto;
    width: 600px;
    height: 400px;
    position: relative;
}
.slider-container img {
    position: absolute;
    opacity: 0;
    transition: opacity 1s;
    z-index: 1;
}
.slider-container img.active{
    opacity: 1;
}
.slider-container .slider-number{
    position: absolute;
    left: 10px;
    top: 10px;
    background-color: #333;
    color: aliceblue;
    padding: 5px 10px;
    font-size: 20px;
    z-index: 2;
    border-radius: 6px;
}
.slider-controls {
    width: 600px;
    margin: auto;
    overflow: hidden;
}

.slider-controls .prev,
.slider-controls .next {
background-color: rgb(31, 112, 85);
color: aliceblue;
font-size: 16px;
text-align: center;
cursor: pointer;
border-radius: 5px;
user-select: none;
width: 20%;
}
.slider-controls .prev{
    float: left;
}
.slider-controls .next{
    float: right;
}
.slider-controls .prev.disabled,
.slider-controls .next.disabled {
    background-color: rgba(52, 122, 99, 0.452);
    cursor: no-drop;
}

.slider-controls .indicators{
    width: 60%;
    float: left;
}
.slider-controls .indicators ul 
{
    list-style: none;
    margin: 0;
    text-align: center;
}
.slider-controls .indicators ul li{
    display: inline-block;
    background-color: aliceblue;
    color: #333;
    font-weight: bold;
    height: 28px;
    width: 28px;
    border-radius: 4px;
    margin: 0 2px;
    line-height: 28px;
    cursor: pointer;
}
.slider-controls .indicators ul li.active{
    background-color: rgb(42, 148, 113);
    color: aliceblue;
}