header.page-header h1 {
    text-align: center;
    text-decoration: underline;
    margin: 90px 0;
}

h1.title_404 {
    font-size: 50px;
}

h1.title_404 span {
    font-weight: bold;
    color: #00EA90;
}

div.img_404 {
    margin: 100px 0;
}

.pictures_404 {
    display: block;
    width: 60%;
    position: relative;
    margin: auto;
}

.logo_404 {
    display: block;
    width: 60%;
    position: relative;
    margin: auto;
}

@media only screen and (max-width: 992px) {
    h1.title_404 {
        font-size: 40px;
    }

    div.img_404 {
        margin: 70px 0;
    }

    .pictures_404 {
        width: 80%;
    }
    
    .logo_404 {
        width: 80%;
    }
}

@media only screen and (max-width: 768px) {
    header.page-header h1 {
        margin: 120px 0 50px 0;
    }

    h1.title_404 {
        font-size: 30px;
    }

    div.img_404 {
        margin: 50px 0;
    }

    .pictures_404 {
        width: 100%;
    }
    
    .logo_404 {
        width: 100%;
    }
}