body {
    background: black;
    margin: 0px auto;
    padding: 0px;
}
main {
    width: 100%;
    margin: 0px;
    min-height: 100vh;
}
.sections_and_logo {
    display: flex;
    width: 80%;
    margin: 150px auto;
}
.mobile_logo {
    display: none;
}
.sections {
    display: flex;
    flex-direction: column;
    height: auto;
    width: 100%;
    margin-right: 40px;
}
a {
    text-decoration: none;
}
.education_btn, .tools_btn, .telegram_projects_btn {
    align-items: center;
    display: flex;
    justify-content: center;
    width: 100%;
    color: rgb(0, 168, 225);
    background-color: black;
}
.education_btn {
    height: 200px;
    font: 50px Inter;
    font-weight: 100;
    border-top: 3px solid rgba(0, 168, 225, 0.5);
    border-right: 3px solid rgba(0, 168, 225, 0.5);
    border-bottom: 1.5px solid rgba(0, 168, 225, 0.5);
    border-left: 3px solid rgba(0, 168, 225, 0.5);
    border-top-left-radius: 50px;
    border-top-right-radius: 0px;
    border-bottom-right-radius: 0px;
    border-bottom-left-radius: 0px;
}
.tools_btn {
    height: 200px;
    font: 50px Inter;
    font-weight: 100;
    border-top: 1.5px solid rgba(0, 168, 225, 0.5);
    border-right: 3px solid rgba(0, 168, 225, 0.5);
    border-bottom: 1.5px solid rgba(0, 168, 225, 0.5);
    border-left: 3px solid rgba(0, 168, 225, 0.5);
    border-radius: 0px;
}
.telegram_projects_btn {
    height: 200px;
    font: 50px Inter;
    font-weight: 100;
    border-top: 1.5px solid rgba(0, 168, 225, 0.5);
    border-right: 3px solid rgba(0, 168, 225, 0.5);
    border-bottom: 3px solid rgba(0, 168, 225, 0.5);
    border-left: 3px solid rgba(0, 168, 225, 0.5);
    border-top-left-radius: 0px;
    border-top-right-radius: 0px;
    border-bottom-right-radius: 0px;
    border-bottom-left-radius: 50px;
}
.logo {
    height: 600px;
}
.popup {
    display: none;
}

/* Large desktops and laptops */
@media (min-width: 1200px) and (max-width: 1650px) {
    .sections {
        margin-right: 30px;
    }
    .education_btn, .tools_btn, .telegram_projects_btn {
        height: 140px;
        font: 40px Inter;
        font-weight: 100;
    }
    .logo {
        height: 420px;
    }
}

/* Landscape tablets and medium desktops */
@media (min-width: 992px) and (max-width: 1199px) {
    .sections {
        margin-right: 25px;
    }
    .education_btn, .tools_btn, .telegram_projects_btn {
        height: 100px;
        font: 30px Inter;
        font-weight: 100;
    }
    .logo {
        height: 300px;
    }
}

/* Portrait tablets and small desktops */
@media (min-width: 768px) and (max-width: 991px) {
    .sections_and_logo {
        width: 75%;
        flex-direction: column;
        margin: 100px auto;
    }
    .mobile_logo {
        display: flex;
        width: 100%;
        height: auto;
    }
    .sections {
        width: auto;
        margin-right: 0px;
        margin-top: 30px;
    }
    .education_btn, .tools_btn {
        font: 40px Inter;
        font-weight: 100;
        height: 150px;
        border-radius: 0px;
    }
    .telegram_projects_btn {
        font: 40px Inter;
        font-weight: 100;
        height: 150px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 50px;
        border-bottom-left-radius: 50px;
    }
    .logo {
        display: none;
    }
}

/* Landscape phones and portrait tablets */
@media (min-width: 481px) and (max-width: 767px) {
    .sections_and_logo {
        width: 80%;
        flex-direction: column;
        margin: 50px auto;
    }
    .mobile_logo {
        display: flex;
        width: 100%;
        height: auto;
    }
    .sections {
        width: auto;
        margin-right: 0px;
        margin-top: 20px;
    }
    .education_btn, .tools_btn {
        font: 30px Inter;
        font-weight: 100;
        height: 120px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 0px;
        border-bottom-left-radius: 0px;
    }
    .telegram_projects_btn {
        font: 30px Inter;
        font-weight: 100;
        height: 120px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 50px;
        border-bottom-left-radius: 50px;
    }
    .logo {
        display: none;
    }
}

/* Portrait phones and smaller */
@media (min-width: 321px) and (max-width: 480px) {
    .sections_and_logo {
        width: 80%;
        flex-direction: column;
        margin: 80px auto;
    }
    .mobile_logo {
        display: flex;
        width: 100%;
        height: auto;
    }
    .sections {
        width: auto;
        margin-right: 0px;
        margin-top: 20px;
    }
    .education_btn, .tools_btn {
        font: 25px Inter;
        font-weight: 100;
        height: 100px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 0px;
        border-bottom-left-radius: 0px;
    }
    .telegram_projects_btn {
        font: 25px Inter;
        font-weight: 100;
        height: 100px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 40px;
        border-bottom-left-radius: 40px;
    }
    .logo {
        display: none;
    }
}

/* Iphone 5 */
@media (max-width: 320px) {
    .sections_and_logo {
        width: 80%;
        flex-direction: column;
        margin: 80px auto;
    }
    .mobile_logo {
        display: flex;
        width: 100%;
        height: auto;
    }
    .sections {
        width: auto;
        margin-right: 0px;
        margin-top: 15px;
    }
    .education_btn, .tools_btn {
        font: 24px Inter;
        font-weight: 100;
        height: 90px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 0px;
        border-bottom-left-radius: 0px;
    }
    .telegram_projects_btn {
        font: 24px Inter;
        font-weight: 100;
        height: 90px;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
        border-bottom-right-radius: 40px;
        border-bottom-left-radius: 40px;
    }
    .logo {
        display: none;
    }
}