:root{
    --linea--borde-relleno:#434344;
    --linea--borde-vacio:#bcbcbc;
}


/** {
    box-sizing: border-box;
}*/

/*body {
    background-color: aliceblue;
    font-family: 'Muli', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}*/

.contenedor{
   
    font-family: 'Muli', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin: 0;
}

.progreso-contenedor{
    display: flex;
    justify-content: space-between;
    position: relative;
   /* margin-bottom: 30px;*/
    max-width: 100%;
    width: 550px;
}


.progreso-contenedor::before {
    content: '';
    background-color: var(--linea--borde-vacio);
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 100%;
    z-index: -1;
    transition: 0.4s ease;
}

.progreso {
    background-color: var(--linea--borde-relleno);
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 0%;
    z-index: -1;
    transition: 0.4s ease;
}

.circulo{
    background-color: #fff;
    color: #434344;
    border-radius: 50%;
    height: 30px;
    width: 30px;    
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--linea--borde-vacio);
    transition: 0.4s ease;
}

.circulo.active{
    border-color: var(--linea--borde-relleno);
}

.btn{
    background-color: var(--linea--borde-relleno);
    color: #fff;
    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(--linea--borde-vacio);
    cursor: not-allowed;
}