@media  (max-width: 1560px) and (min-width: 1251px) {
    .section {
        /* background-color: darkcyan; */
    }
    #intro-subtitle {
        margin-top: -6%;
        font-size: 17px;
    }
    .bio-title {
        background-color: black;
        font-size: 55px;
        margin: 2% 45% 0% 45%;
    }
    .bio-content {
        padding-top: 3%;
        margin-left: 6%;
    }

    .bio-img-container {
        width: 340px;
        height: 400px;
        border-radius: 5%;
    }
    #bio-img-caption{
        font-size: 20px;
        margin: -2% 40% 0% 40%;
    }
    #bio-right-text {
        width: 420px;
        font-size: 15px;
        padding-left: 5%;
    }
    #bio-right-text p{
        background-color: black;
    }
    .mars-container {
        margin-top: -11%;
        padding-bottom: 10%;
        text-align: right;
    }
    #mars {
        margin-right: 2%;
        user-select: none;
    }

    .project-title {
        font-size: 55px;
        margin: 0;
        padding: 0;
    }
    .project-cards-container {
        padding-left: 0%;
    }
    #qtc-card {
        margin: 0;
    }
    .project-card-img-container {
        width: 440px;
        height: 200px;
    }
    .project-card-title {
        margin-top: 1%;
        font-size: 18px;
    }
    .project-card-title a:hover {
        font-size: 19px;
    }
    .project-card-subtitle {
        font-size: 12px;
        margin-top: -2.25%;
        margin-bottom: 2%;
    }
    .project-card-description-subtitle, .project-card-tools-subtitle {
        font-size: 13px;
    } 
    .project-card-description-text {
        font-size: 12px;
        width: 440px;
    }
    .project-card-tools-text {
        font-size: 12px;
    }

    #neptune-container {
        margin-top: -13%;
        padding-bottom: 5%;
    }
    #neptune {
        width: 12%;
    }
    .class-title {
        font-size: 55px;
        margin-top: 1%;
    }
    .class-contents {
        margin-top: 0;
    }
    .class-course-name {
        font-size: 20px;
        margin-top: 4%;
    }
    .class-assignment-title {
        font-size: 15px;
    }
    .class-assignment-title a:hover{
        font-size: 16px;
    }
    .class-assignment-description {
        font-size: 12px;
        margin-top: 0.5%;
    }
    .class-assignment-tools {
        font-size: 13px;
    }
    
}

@media (max-width: 1250px) { 
    .section {
        margin-top: 0;
    }
    #saturn-container {
        display: flex;
        justify-content: center;
    }
    #saturn {
        margin: 0;
        padding: 0;
        width: 28%;
        margin-bottom: 4%;
    }
    #intro-title {
        font-size: 80px;
        margin-top: -12%;
    }
    #intro-subtitle {
        font-size: 18px;
        margin-top: -6.5%;
    }
    #intro-img-linkedIn {
        width: 8%;
        padding-bottom: 1%;
        margin-right: 0.4%;
    }
    #intro-img-github {
        width: 8%;
        text-align: center;
        padding-bottom: 1%;
    }
    #intro-img-hackerrank {
        width: 8%;
        padding-bottom: 1%;
    }
    #intro-img-linkedIn:hover, #intro-img-github:hover,  #intro-img-hackerrank:hover{
        width: 8.5%;
    }
    .intro-button {
        cursor: pointer;
        border: 3px solid white;
        font-size: 25px;
        text-align: center;
        text-decoration: none;
        padding: 0.5% 0.65%;
        margin-right: 0.5%;
        background-color: black;
        color: white;
        transition: 0.5s;
    }
    .intro-button:hover {
        font-size: 25px;
    }
    #greeting-button {
        display: none;
    }

    .mars-container-mobile {
        display: flex;
        justify-content: right;
        margin-top: 0;
        margin-left: 2%;
    }
    #mars-mobile {
        width: 17%;
    }
    .bio-title {
        display: none;
    }
    .bio-img-container {
        width: 350px;
        height: 360px;
        border-radius: 5%;
        margin-left: 32%;
        margin-top: -15%;
    }
    #bio-img-caption {
        display: none;
    }    
    .bio-content {
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
    }
    #bio-right-text {
        width: 820px;
        margin-top: 2%;
        padding: 0;
        margin-left: 12%;
        font-size: 20px;
    }
    .mars-container {
        text-align: left;
        padding-bottom: 5%;
    }

    #project-section {
        display: none;
    }
    #project-section-mobile {
        display: block;
    }
    .project-cards-container {
        display: flex;
        margin-top: 1%;
    }
    .project-card {
        margin: 0% 2% 0% 2%;
      }
    #qtc-card {
        padding-right: 0;
    }
    .project-card-title {
        font-size: 60px;
        text-align: center;
    }
    .project-card-img-container {
        width: 860px;
        height: 450px;
    }
    .project-card-img-container img, .project-card-subtitle, .project-card-description-subtitle
    , .project-card-description-text, .project-card-tools-subtitle, .project-card-tools-text{
        margin-left: 6%;
    }
    .project-card-subtitle {
        margin-top: 1%;
        padding-left: 0;
    }
    .project-card-subtitle, .project-card-description-subtitle, .project-card-tools-subtitle {
        font-size: 32px;
    }
    .project-card-description-text,.project-card-tools-text  {
        font-size: 27px;
        width: auto;
        padding-left: 2%;
    }
    .project-card-description-subtitle {
        margin-top: 3%;
    }
    .project-card-tools-subtitle {
        margin-top: 1%;
    }
    .fp-arrow.fp-prev, .fp-arrow.fp-next {
        margin-top: 3%;
    }
    .fp-arrow.fp-prev {
        margin-left: 0;
    }
    .fp-arrow.fp-next {
        margin-right: 0;
    }

    #neptune-container {
        text-align: right;
    }
    #neptune-container-mobile {
        display: flex;
        justify-content: left;
        margin-top: -1.5%;
    }
    #neptune-mobile{
        width: 24%;
    }
    .class-title {
        display: none;
    }
    .class-contents {
        margin: 0;
    }
    .class-course {
        margin: 12% 1% 0% 1%;
    }
    .class-course-name {
        font-size: 44px;
    }
    .class-assignment-title {
        font-size: 27px;
    }
    .class-assignment-title a{
        font-weight: normal;
    }
    .class-assignment-description, .class-assignment-tools {
        font-size: 22px;
    }
    .class-assignment-description {
        margin-top: 0.75%;
        margin-bottom: 1%;
    }
    #course-web {
        margin-top: 18%;
    }

    #fp-nav {
        margin-top: 13%;
    }
    #fp-nav ul li .fp-tooltip  {
        font-size: 20px;
        top: 6px;
        max-width: 390px;
        color: wheat;
        font-weight: 500;
    }
    #fp-nav ul li, .fp-slidesNav ul li {
        height: 25px;
    }
    #fp-nav ul li a span {
        width: 10px;
        height: 10px;
    }
    #fp-nav ul li a.active span {
        height: 20px;
        width: 20px;
        background-color: wheat;
    }
    #fp-nav ul li .fp-tooltip.fp-left {
        left: 35px;
    }
}