@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100;400;500;700&family=Roboto&family=Rubik&display=swap');
*{
    box-sizing: border-box;
}
:root{
    --line-border-fill:#3498db;
    --line-border-empty:#e0e0e0;
    --line-border-disable:rgb(181, 177, 177);
}

body{
    background-color: #f6f7fb;
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}
.container{
    text-align: center;
}
.progress{
    background-color: var(--line-border-fill);
    position: absolute;
    top: 50%;
    height: 4px;
    width: 0%;
    transform: translateY(-50%);
    transition: .4s ease;
    left: 0;
    z-index: -1;
}
.progress-container::before{
    content: '';
    background-color: var(--line-border-empty);
    position: absolute;
    top: 50%;
    left: 0;
    height: 4px;
    width: 100%;
    transform: translateY(-50%);
    transition: .4s ease;
    z-index: -1;
}
.progress-container{
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 30px;
    max-width: 100%;
    width: 350px;
}
.circle{
    background-color: #fff;
    color: #999;
    border-radius: 50%;
    height: 30px;
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--line-border-empty);
    transition: .4s ease;

}
.circle.active{
    border-color: var(--line-border-fill);
}
.btn{
    background-color: var(--line-border-fill);
    color: white;
    border: 0;
    cursor: pointer;
    font-family: inherit;
    padding: 8px 30px;
    margin: 5px;
    font-size: 14px;
    border-radius: .3rem;
} 
 
.btn:focus{
    outline: 0;
}
.btn:active{
    transform: scale(0.98);
}
.btn:disabled{
    background-color: var(--line-border-disable);
    cursor:not-allowed;
}