towers.css

*{
    font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    box-sizing: border-box;

}
body{
    margin: 0;
    padding:0;
}
.container{
    text-align:center;
}
.numbers{
    width:300px;
    height:40px;
    border-radius: 20px;
    border: 2px solid #F44336;
    font-size: 20px;
    font-weight: bold;
    
}
.numbers:focus,.play:focus{
    outline: none;
}
.play{
   border-radius: 20px;
   height:30px;
   width:80px;
   color:#fff;
   background:#007ACC;
   border:none;
   cursor: pointer;
}
.number{
    text-align:center;
}
.discs-wrapper{
    margin-top: 150px;
    display:flex;
    justify-content: space-around;
    position: relative;
}
.bar{
    width:20px;
    height: 300px;
    background:#F44336;
    margin:0 auto;
    border-radius:10px 10px 0 0;

}
.base{
    height:30px;
    width:250px;
    border-radius:10px;
    background:#F44336;
}
.disc{
    background:#007ACC;
    height:20px;
    position:absolute;
    border-radius:20px;
    border:1px solid #000;
}