@font-face {
    font-family: Neoh;
    src:url("fonts/GFSNeohellenic.ttf");
}

a{
    color: #ff6a6a;
    text-decoration: none;
}

a:hover{
    color: #8b0000;
}

body{
    margin: 0;
    padding: 0;
    background: url("images/back.png");
    background-size: 25%;
    background-attachment: fixed;
    text-align: justify;
    font-family: "Neoh";
    font-size: 14pt;
}

.button_old{
    padding: 5pt;
    margin: 3pt;
    background-color: #ff6a6a;
    border-left: #dfffce 3px solid;
    border-top: #dfffce 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius: 20px;
    text-align: center;
    text-shadow: 1px 1px 0px #ffffff;
}

.button_old:hover{
    color: #ffffff;
    background-color: #8b0000;
    border-right: #ffd1fb 3px solid;
    border-bottom: #ffd1fb 3px solid;
    border-left: #3d3846 3px solid;
    border-top: #3d3846 3px solid;
    text-shadow: 1px 1px 0px #000000;
    cursor: pointer;
}

.centering{
    text-align: center;
}

.content{
    margin-top: 3%;
    margin-bottom: 3%;
    margin-left: auto;
    margin-right: auto;
    width: 88%;
}

.footer{
    padding: 10pt;
    background-color: #ff6a6a;
    border-left: #ffffff 3px solid;
    border-top: #ffffff 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius: 20px;
    font-size: 12pt;
    font-style: italic;
}

.main{
    padding: 10pt;
    background-color: #ffffff;
    border-left: #f6f5f4 3px solid;
    border-top: #3d3846 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius:  0 0 20px 20px;
}

.presentation{
    display: flex;
}

.presentation_left{
    width: 80pt;
    padding: 10pt;
    background-color: #ff6a6a;
    border-left: #f6f5f4 3px solid;
    border-top: #f6f5f4 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius:  20px;
    text-align: center;
    text-shadow: 1px 1px 0px white;
}

.presentation_left_1{
    font-size: 28pt;
    text-align: center;
}

.presentation_left_2{
    font-size: 12pt;
    text-align: center;
}

.presentation_right{
    width: calc(100% - 80pt);
    height: 78pt;
    overflow: hidden;
    padding: 0pt 10pt 10pt 10pt;
}

.presentation_footer{
    position: relative;
    top: 76pt;
    padding: 1pt;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 1));
    text-align: right;
}

.title_inline{
    display: flex;
    background-color: #ffffff;
    border-left: #ffffff 3px solid;
    border-top: #ffffff 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius: 20px;
}

.title_inline a{
    color: #000000;
    text-decoration: none;
}

.title_grand{
    padding: 10pt;
    background-color: #ffffff;
    border-left: #ffffff 3px solid;
    border-top: #ffffff 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius: 20px;
}

.title_grand h2{
    transform: translate(0%, -30%);
}

.title_grand h2::before{
    background: url("images/logo.png");
    background-size: 50px 50px;
    display: inline-block;
    width: 50px;
    height: 50px;
    content: "";
    translate: 0% 30%;
}

.title_main{
    padding: 10pt;
    background-color: #ff6a6a;
    border-left: #ffffff 3px solid;
    border-top: #ffffff 3px solid;
    border-right: #3d3846 3px solid;
    border-radius: 20px 20px 0 0;
    font-size: 16pt;
    font-weight: bold;
    text-shadow: 1px 1px 0px white;
}

.title_menu{
    display: none;
}

.title_menu_collapse{
    display: none;
}

.title_menu:hover .title_menu_collapse{
    display: block;
}

.title_menu_collapse a{
    color: #ffffff;
}

.title_pc{
    display: block;
}

.title_sub{
    padding: 3pt;
    background-color: #d2f5f7;
    border-left: #ffffff 3px solid;
    border-top: #ffffff 3px solid;
    border-right: #3d3846 3px solid;
    border-bottom: #3d3846 3px solid;
    border-radius: 20px;
}


#m1::before{
    content: 'Άννα Γεωργαντίδη, anna.georgantidis';
}

#m2::before{
    content: 'Κωνσταντίνος Γρίβας, constantine12grivas';
}

#m3::before{
    content: 'Μανώλης Λάρδας, elardas';
}

#m4::before{
    content: 'Ορέστης Λιγνός, orelig2006';
}

#m5::before{
    content: 'Νεκτάριος Σταυράκης, nstavrak';
}

#m1::after{
    content: 'gmail.com';
}

#m2::after{
    content: 'gmail.com';
}

#m3::after{
    content: 'di.uoa.gr';
}

#m4::after{
    content: 'gmail.com';
}

#m5::after{
    content: 'math.uoa.gr';
}

@media screen and (max-width:765px) {
    
    body{
        text-align: left;
        font-size: 12pt;
    }

    .presentation{
        display: block;
        margin-bottom: 10pt;
    }
    
    .presentation_left{
        width: calc(100% - 25pt);
    }
    
    .presentation_right{
        width: calc(100% - 25pt);
        height: 120pt;
    }
    
    .presentation_footer{
        top: 120pt;
        background-image: linear-gradient(to right, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 1));
    }
    
    .title_grand h2{
        font-size: 12pt;
    }
    
    .title_grand h2::before{
        translate: 0% 40%;
    }
    
    .title_inline{
        display: block;
    }
    
    .title_main{
        font-size: 12pt;
    }
    
    .title_menu{
        display: block;
    }
    
    .title_pc{
        display: none;
    }
    
    .title_sub{
        font-size: 10pt;
    }

}