.logo {
    font-size: 4em;
    line-height: 55px;
}

.logo a,
.logo a:hover,
.logo a:visited,
.logo a:focus {
    color: #ebebeb;
}

.logo span {
    font-size: 0.8em;
    color: #f4db31;
}

.menu_text ul {
    float: left;
}

#boutonOuvrirPanneau {
    cursor:pointer; 
    float: right;
    padding-top: 12px;
}

@media (max-width: 575px) {
    .header_section .col-sm-6 {
        max-width: 50%;
    }
}

h1 {
    text-align: center;
    font-size: 50px;
    font-weight: bold;
    color: #f4db31;
}

h2 {
    text-align: center;
    font-size: 40px;
    font-weight: bold;
    color: #1a1a1a;
}

.section-contenu {
    width: 100%;
    float: left;
    background-color: #fefefe;
    height: auto;
    margin-top: 60px;
    padding-bottom: 50px;
}

.section-contenu2 {
    width: 100%;
    float: left;
    background-color: #fefefe;
    height: auto;
    padding-top: 60px;
    padding-bottom: 50px;
}

.un-cours {
    width: 100%;
    float: left;
    background-color: #1a1a1a;
    color: #ebebeb;
    height: auto;
    margin-top: 70px;
    padding: 40px 10px 20px 10px;
    text-align: center;
}

.un-cours:hover {
    color: #1a1a1a;
    background-color: #fefefe;
}

.un-cours h3 {
    font-size: 2em;
    color: inherit;
}

.intro {
    font-size: 20px;
    margin-top: 40px;
}

.section_footer h2 {
    width: inherit;
    text-align: inherit;
}

/* Boîte diagonale. Source : https://9elements.com/blog/pure-css-diagonal-layouts/ */
.diagonal-box {
   background-color: #f4db31;
   transform: skewY(-3deg);
}

.diagonal-box .container {
   max-width: 50em;
   margin: 0 auto;
   transform: skewY(3deg);
}

a.bouton {
    float: left;
    font-size: 18px;
    color: #fff;   
    background: #000;
    text-align: center;
    padding: 10px;
    margin-top: 30px;
}

a.bouton:hover {
    color: #fefefe;
    background-color: #f8ca11;
}

.diagonal-box a.bouton:hover {
    color: #1a1a1a;
    background-color: #fefefe;
}

.divbouton {
    justify-content: center;
    margin-left: 0;
}