style.css

*{
    box-sizing: border-box;
}
body{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    overflow: hidden;
    background-color:beige;
}

.container{
    text-align: center;
}
.progress-container{
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    position: relative;
    max-width: 100%;
    width: 350px;
}
.progress-container::before{
    content: "";
    height: 4px;
    width: 100%;
    background-color: #e0e0e0;
    position: absolute;
    transform: translateY(-50%);
    top: 50%;
    left: 0;
    z-index: -1;
}
.progress{
    height: 4px;
    width: 0%;
    background-color: #3498db;
    position: absolute;
    transform: translateY(-50%);
    top: 50%;
    left: 0;
    z-index: -1;
}
.circle{
    height: 30px;
    width: 30px;
    background-color: #fff;
    border: 3px solid #e0e0e0;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.circle.active{
    border-color: #3498db;
}

.btn{
    background:#3498db ;
    border: 0;
    color: #fff;
    padding: 8px 30px;
    border-radius: 6px;
    cursor: pointer;
}
.btn:disabled{
    background :#ccc ;
    cursor: not-allowed;
}


.btn:active{
    transform: scale(0.95);
}