.text-justify {
    text-align: justify;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

article {
    margin: 10px 0;
    padding: 5px;
}

aside div {
    margin-bottom: 50px;
}

aside div {
    font-size: 15px;
}

.formation {
    display: hidden;
}

.font-weight-bold {
    font-weight: bold;
}


#backToTop {
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
    background-color: #ffffff;
    font-size: 48px;
    font-weight: 900;
    width: 50px;
    height: 50px;
    position: fixed;
    bottom: 120px;
    right: 30px;
    transition: opacity .5s, visibility .5s;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

#backToTop.show {
    opacity: 1;
    visibility: visible;
}