* {
    box-sizing: border-box;
}


/* to define custom  variables/properties we need a scope*/


/* using root scope here */

:root {
    --line-border-fill: #781C68;
    --line-border-empty: #319DA0;
    --font-color: rgb(0, 0, 0);
}

body {
    font-family: 'Montserrat', sans-serif;
    display: grid;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
    background-color: #e2d0b7;
}

.heading {
    color: var(--line-border-fill);
    text-align: center;
    font-size: 3rem;
    text-decoration: underline;
    margin: 0;
}

.desc {
    text-align: center;
    margin: 1rem;
    color: gray
}

.container {
    text-align: center;
}

.progress-container {
    display: flex;
    justify-content: space-between;
    /* it will take the space between 12345 and spread it evenly like 1 2 3 4 5  */
    position: relative;
    margin-bottom: 30px;
    min-width: 100%;
    width: 400px;
}

.progress-container::before {
    content: "";
    /* In order to use ::before or ::after we need to use content property as well  */
    background-color: var(--line-border-empty);
    position: absolute;
    top: 50%;
    left: 0;
    height: 4px;
    width: 100%;
    /* try to hide the width property here and check the result*/
    transform: translateY(-50%);
    z-index: -1;
}

.progress {
    background-color: var(--line-border-fill);
    position: absolute;
    top: 50%;
    left: 0;
    height: 4px;
    width: 0%;
    /* try to hide the width property here and check the result*/
    transform: translateY(-50%);
    z-index: -1;
    transition: 0.4s ease;
}

.circle {
    background-color: white;
    color: var(--font-color);
    border-radius: 50%;
    height: 30px;
    width: 30px;
    /* to center the content use line 64--67*/
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--line-border-empty);
    transition: 0.4s ease;
}

.circle.active {
    border-color: var(--line-border-fill);
}

.btn {
    background-color: var(--line-border-fill);
    color: white;
    border: 0;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    padding: 8px 30px;
    margin: 5px;
    font-size: 14px
}

.btn:active {
    transform: scale(0.98);
}

.btn:focus {
    outline: 0;
}

.btn:disabled {
    background-color: var(--line-border-empty);
    cursor: not-allowed;
}