.main
{
    margin-top: 100px;
}
.about_photo
{
    width: calc(4 * 16vw);
    height: calc(4 * 9vw);
    margin: 150px auto 0px auto;
    border: 2px solid red;
}
.about_title
{
    width: fit-content;
    margin: 30px auto;
    font-size: 50px;
    font-weight: 500;
}
.about_description
{
    width: 80%;
    margin: 30px auto;
    font-size: 30px;
}

@media screen and (max-width: 768px) 
{
    .about_title
    {
        width: 80%;
        font-size: 30px;
        font-weight: 500;
    }
    .about_description
    {
        font-size: 20px;
    }
}