body {
    margin: 0;
}

nav {
    background-color: transparent !important;
}

nav li {
    margin-left: 50px;
    font-weight: 600;
    font-size: 20px;
    transition: 0.5s;
}

nav li:hover {
    transform: scale(1.03);
}

header {
    height: 100vh;
    background-image: url(./images/header.jpg);
    background-size: cover;
    background-attachment: local;
    margin-bottom: 100px;
}

.home_title {
    margin-top: 150px !important;
    color: white;
    text-shadow: 1px 1px 3px black;
}

.home_title h1,
.home_title h4:not(.parent-yt h4, .yellow-text h4) {
    padding: 20px 100px;
}

.yellow-text {
    background-color: #f8bc26;
    display: flex;
    align-items: center;
    margin-left: 20px;
    padding: 0 10px;
    color: black;
    font-weight: 700;
    text-shadow: none;
}

.div-form {
    background-color: rgba(255, 255, 255, 0.399);
    display: flex;
    align-items: center;
    justify-content: center;
    color: black;
}

.parent-house {
    position: relative;
    background-color: #e5e5e56b;
    padding: 50px 0;
    margin: 100px 30px;
    z-index: 100;
    border-radius: 10px;
    box-shadow: 1px 1px 10px rgb(169, 169, 169);
    transition: 1s;
}

.parent-house:hover {
    background-color: #f8bc26;
}

.cadre_chiffre {
    margin-top: 50px !important;
}

.pk-div {
    background-color: #eff8ee;
    margin: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 50px 20px;
    font-size: 18px;
    border-radius: 20px;
}

.pk-div img {
    width: 3em;
}

.picture-yellow h1 {
    padding: 0 20px;
}

.big-img-yellow img {
    width: 40em;
    padding: 100px;
}

.ccm {
    background: url(./images/toit-solar.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}



.partners {
    padding: 50px 0;
}

.partners img {
    width: 15em;
}

#abstract-bg {
    background-image: url(./images/abstract-background.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    color: white;
}

#abstract-bg h1 {
    margin-bottom: 0;
}

footer {
    background: url(./images/abstract-background.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 50px 0 0 0;
}

.yellow-sec {
    display: flex;
    align-items: center;
    padding: 20px;
    border-radius: 10px;
    background-color: #f8bc26;
}

.copyright {
    background-color: black;
    padding: 20px;
}


@media (max-width: 1200px) {
    .project-sec .img-col img {
        width: 20em;
    }

    .home_title {
        margin: 0;
    }
}

@media (max-width: 1150px) {
    .big-img-yellow img {
        width: 30em;
    }
}

@media (max-width: 991px) {
    .big-img-yellow img {
        padding: 0;
        margin-top: 50px;
    }

    .picture-yellow h1 {
        margin-bottom: 50px;
    }

    .global-row {
        padding: 0 100px;
    }

    .img-col img {
        width: 15em !important;
    }

    .home_title {
        margin-top: 50px !important;
    }
}

@media (max-width:768px) {
    .img-col {
        margin-bottom: 50px;
    }
}

@media (max-width: 571px) {
    .big-img-yellow img {
        width: 20em;
    }

    #abstract-bg img {
        width: 10em !important;
    }
}

@media (max-width:576px) {
    .parent-house {
        margin: 20px !important;
        padding: 20px 10px !important;
    }
}

@media (max-width:500px) {
    .global-row {
        padding: 0 40px;
    }
}

@media (max-width:430px) {
    .col-display {
        text-align: center;
    }

    #abstract-bg h1 {
        font-size: 20px;
    }
}

@media (max-width:410px) {
    .parent-yt {
        margin-left: 20px !important;
    }

    .home_title h1,
    .home_title h4:not(.parent-yt h4, .yellow-text h4) {
        padding: 20px 60px;
    }
}

@media (max-width: 371px) {
    #abstract-bg img {
        width: 7em !important;
    }
}