#button5
{
    color: #24A19C;
}

#button5:after {
    display:block;
    content: '';
    border-bottom: solid 2px #24A19C;  
    transform: none;
  }

h3
{
    font-size: 2em;
    text-decoration: underline double;
    text-align: center;
}

#texte
{
    font-size: 1.5em;
    text-align: justify;
    margin: auto;
    width: 40em;
}

#num
{
    text-decoration: underline;
}

#PMG
{
    font-style: italic;
}

@media all and (max-width: 1750px ){
    h3
    {
      font-size: 1.8em;
    }
    #texte
    {
        font-size: 1.3em;
    }

}

@media all and (max-width: 1465px ){
    h3
    {
        font-size: 1.6em;
    }
    #texte
    {
        font-size: 1.15em;
    }
}

@media all and (max-width: 1260px ){
    h3
    {
        font-size: 1.4em;
    }
    #texte
    {
        font-size: 1em;
    }
}

@media all and (max-width: 975px ){
    h3
    {
        font-size: 1.2em;
    }
    #texte
    {
        font-size: 0.9em;
    }
}

@media (max-device-width: 600px){
    h3
    {
        font-size: 3em;
    }
    #texte
    {
        font-size: 1.5em;
        width: 90%;
    }
}