/*Mobile Devices*/
@media screen and (max-width: 768px) {
    /*MAIN*/
    #main {
        width: 100%;
        display: flex;
        flex-direction: column;
    }

    #main > div:first-of-type {
        background-color: rgba(138, 20, 11, 0.83);
        width: 100%;
        height: 700px;
    }

    #main > div:first-of-type h2:nth-child(1) {
        color: white;
        padding-left: 20%;
        padding-top: 10%;
        font-size: 2em;
    }

    #main > div:first-of-type h2:nth-child(2) {
        color: white;
        padding-left: 5%;
        padding-top: 1em;
        padding-bottom: 79px;
        font-size: 5em;
    }

    #main > div:nth-child(2) {
        background-color: rgba(14, 0, 5, 0.83);
        width: 100%;
        height: 700px;
    }
    #main_div_a_block {
        display: flex;
        flex-direction: column;
    }

    .main_a {
        color: #ffffff;
        letter-spacing: 2px;
        font-size: 12px;
        text-transform: uppercase;
        text-decoration: none;
        background: black;
        padding: 18px 43px 18px 31px;
        border-radius: 4px;
        margin-left: 2%;
        margin-right: 2%;
        margin-top: 5px;
        -webkit-transition-duration: 0.4s;
        transition-duration: 0.4s;
        overflow: hidden;
        cursor: pointer;
    }

    /*ABOUT ME*/
    #about_me h2 {
        margin: 0 13em 0 0;
    }

    /*MY PROJECT*/
    #my_project {
        margin-top: 0;
    }

    /*TESTIMONIAL*/
    #testimonial_block h2 {
        color: rgba(14, 0, 5, 0.83);
        font-size: 3em;
        word-spacing: 5px;
        width: 70%;
        padding: 3% 3% 3% 3%;
    }

    #about_me h2 {
        margin: 0px 2% 0 2%;
    }

    #my_project img {
        border-style: none;
        margin: 0 2% 0 2%;
        width: 90%;
        height: 90%;
    }
}