body {
    text-align: center;
    padding: 0;
    margin: 0;
    background: url('images/dcAndMarvelComicPic.jpeg') no-repeat center center fixed;
    background-size: cover;
}

:root {
    --outer-shadow:
    0 0 0.1vw 0.4vw #fffb00,
    0 0 0.4vw 0.6vw #000000,
    0 0 0.1vw 0.3vw #001214, 
} 

.slot {
    width: 88%;
    height: 400px;
    overflow: hidden;
    margin: auto;
    margin-top: 80px;
    background-color: aliceblue;
    border-radius: 8px;
    box-shadow: var(--outer-shadow);
}

#slot-screen {
    height: 500px;
    position: relative;
    overflow: hidden;
}

ul {
    list-style: none;
}

ul li {
    border: 2px solid black;
    border-radius: 5px;
    width: 98%;
    margin: 1px 0;
    background-color: black;
    box-sizing: border-box;
}

.reels {
    width: 31%;
    position: absolute;
    padding: 0px;
}

.reels:nth-child(1) {
    left: 0;
}

.reels:nth-child(2) {
    left: 34.5%;
}

.reels:nth-child(3) {
    right: 0;
}

.reels img {
    display: block;
    margin: auto;
    height: 240px;
    max-width: 100%;
}

.stop-btn {
    display: inline-block;
    padding: 35px;
    margin: 40px;
    margin-top: 100px;
    background-color: rgb(237 23 23);
    box-shadow: 0 0 29 31 #fff,
                0 0 19px 19px #f00,
                0 0 33px 17px #f00;
    border-bottom: solid 4px #627295;
    border-radius: 60px;
}

.stop-btn:hover {
    background-color: rgb(21 199 15);
    cursor: pointer;
    box-shadow: 0 0 29px 31px #FFF,
                0 0 19px 19px rgb(21 255 0),
                0 0 33px 17px rgb(0 255 42);
}

.stop-btn:active {
    -webkit-transform: translateY(4px);
    transform: translateY(4px);
    border-bottom: none;
}

#start-btn {
    display: inline-block;
    padding: 20px 40px;
    background-color: #13aa52;
    border: 5px solid #02893a;
    font-size: 30px;
    margin-bottom: 40px;
    font-weight: bold;
}

#start-btn:hover {
    background-color: #06a347;
    cursor: pointer;
}

#start-btn:active {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    border: none;
}