.flex-parent {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.input-flex-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 80vw;
    height: 100px;
    max-width: 1000px;
    position: relative;
    z-index: 0;
}

.input {
    width: 25px;
    height: 25px;
    background-color: #1f427a;
    position: relative;
    border-radius: 50%;
}
.input:hover {
    cursor: pointer;
}
.input::before, .input::after {
    content: "";
    display: block;
    position: absolute;
    z-index: -1;
    top: 50%;
    transform: translateY(-50%);
    background-color: #1f427a;
    width: 4vw;
    height: 5px;
    max-width: 50px;
}
.active {
    background: transparent;
}
.input::before {
    left: calc(-4vw + 12.5px);
}
.input::after {
    right: calc(-4vw + 12.5px);
}
.input.active {
    background-color: #1f427a;
}
.input.active::before {
    background-color: #1f427a;
}
.input.active::after {
    background-color: #AEB6BF;
}
.input.active span {
    font-weight: 700;
}
.input.active span::before {
    font-size: 13px;
}
.input.active span::after {
    font-size: 15px;
}
.input.active ~ .input, .input.active ~ .input::before, .input.active ~ .input::after {
    background-color: #AEB6BF;
}
.input span {
    width: 1px;
    height: 1px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    visibility: hidden;
}
.input span::before, .input span::after {
    visibility: visible;
    position: absolute;
    left: 50%;
}
.input span::after {
    content: attr(data-year);
    top: 25px;
    transform: translateX(-50%);
    font-size: 14px;
}
.input span::before {
    content: attr(data-info);
    top: -65px;
    width: 70px;
    transform: translateX(-5px) rotateZ(-45deg);
    font-size: 12px;
    text-indent: -10px;
}

.description-flex-container {
    width: 80vw;
    background-color: #1f427a;
    font-weight: 400;
    font-size: 22px;
    margin-top: 50px;
    max-width: 1000px;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 3px solid #ccc;
    border-radius: 10px;
    box-sizing: border-box;

}
.description-flex-container p {
    margin-top: 0;
    display: none;
    color: white;
    text-align: center;
}
.description-flex-container p.active {
    display: block;
}

@media (min-width: 1250px) {
    .input::before {
        left: -37.5px;
    }

    .input::after {
        right: -37.5px;
    }
}
@media (max-width: 850px) {
    .input {
        width: 17px;
        height: 17px;
    }
    .input::before, .input::after {
        height: 3px;
    }
    .input::before {
        left: calc(-4vw + 8.5px);
    }
    .input::after {
        right: calc(-4vw + 8.5px);
    }
}