body {
    font-family: Arial, sans-serif;
    margin: 0;
    font-size: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header-wrap {
    background-color: #8D5AF1;
    text-align: center;
    position: fixed;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: start;
    gap: 10px;
    z-index: 10;
    padding: 0;
}

.main-navigation {
     display: flex;
     align-items: center;
     justify-content: space-around;
     width: 100%;
     background-color: #8D5AF1;
     z-index: 10;
     padding-bottom: 5px;
 }

.brand {
      display: flex;
      flex-direction: row;
      align-items: center;
      gap: 8px;
      padding: 8px 10px;
  }

.header-wrap img {
    width: 72px;
    height: auto;
    border-radius: 8px;
}

.brand h1 {
    margin: 0;
    font-size: 1.8em;
}

.header-wrap a {
    color: white;
    text-decoration: none;
}

#header-clone {
    opacity: 0;
    position: static;
}

#home-intro {
    display: flex;
    justify-content: space-between;
    background-color: #faf9ff;
    padding-left: 20px;
}

#home-intro img {
    width: 50%;
}

#home-intro h2 {
    color: #6f3ff5;
    font-size: 2em;
    font-weight: bolder;
}

#home-intro .home-intro-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: start;
}

#companies {
    background-color: #f4ebff;
    text-align: center;
    padding: 0.5%;
}

.companies-images {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    text-align: center;
    padding: 1%;
    margin: 1%;
    color: white;
}

#who-we-are {
    background-color: #f4ebff;
    text-align: center;
    padding: 24px 2% 40px;
    flex: 1;
}

#who-we-are > p {
    max-width: 1000px;
    margin: 0 auto 28px;
    line-height: 1.5;
}

#collaborator-block {
    max-width: 500px;
    margin: 0 auto;
}

.collaborator-card {
    padding: 24px;
    margin: 0;
    box-sizing: border-box;
}

.collaborator-card img {
    width: 140px;
    min-width: 140px;
    height: 140px;
    flex-shrink: 0;
    object-fit: cover;
    border-radius: 50%;
    margin: 0;
}

.collaborator-card h2 {
    margin-bottom: 0;
}

.companies-images img {
    width: 150px;
    filter: grayscale(100%);
    transition: all 0.2s ease;
}

.companies-images img:hover {
    filter: grayscale(0%);
}

#copyrights {
    background-color: #8D5AF1;
    color: white;
    text-align: center;
    padding: 0.5%;
    width: 100%;
    z-index: 10;
    box-sizing: border-box;
    margin-top: auto;
}

.navList {
    display: flex;
    width: max-content;
    justify-content: space-around;
    flex-direction: row;
    gap: 20px;
}

.block {
    background-color: #f6f6f6;
    display: flex;
    flex-direction: column;
    margin: 1%;
    align-items: center;
    text-align: center;
    width: 100%;
    z-index: 1;
}

.block img {
    width: 30%;
    margin: 4%;
}

.container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-direction: row;
    padding: 1%;
}

#courses {
    background-color: #f4ebff;
    text-align: center;
    padding: 0.5%;
}

.course-button {
    background-color: #8D5AF1;
    color: white;
    padding: 3%;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin: 1%;
    transition: all 0.2s ease;
}

.course-button:hover:not(:disabled) {
    background-color: #6f3ff5;
    padding: 4%;
}

.course-button:disabled {
    background-color: gray;
}

#courses img {
    width: 100%;
}

#courses .block {
    justify-content: space-between;
    padding: 6px 6px 12px;
}

/*Taken from W3Schools.*/

.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 15; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0, 0, 0); /* Fallback color */
    background-color: rgba(0, 0, 0, 0.4); /* Black w/ opacity */
    padding-top: 60px;
    align-items: center;
    align-content: center;
    justify-content: center;
    text-align: center;
}

.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 60%;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    -webkit-animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-name: animatetop;
    animation-duration: 0.4s
}

@-webkit-keyframes animatetop {
    from {
        top: -300px;
        opacity: 0
    }
    to {
        top: 0;
        opacity: 1
    }
}

@keyframes animatetop {
    from {
        top: -300px;
        opacity: 0
    }
    to {
        top: 0;
        opacity: 1
    }
}

.close {
    color: white;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.modal-header {
    padding: 2px 16px;
    background-color: #8D5AF1;
    color: white;
    text-align: center;
}

.modal-body {
    padding: 4px 16px;
}

.modal-body img {
    width: 60%;
    height: auto;
}

@media only screen and (max-width: 1130px) {
    .companies-images {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        align-items: center;
        text-align: center;
        justify-items: center;

    }

    #courses .container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 3%;
        padding: 3%;
    }
}

@media only screen and (max-width: 650px) {
    .header-wrap img {
        width: 60px;
    }

    .brand h1 {
        font-size: 1.5em;
    }

    .container {
        flex-direction: column;
    }

    .companies-images {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: space-around;
        gap: 40px;
        text-align: center;
    }

    #home-intro {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
    }

    #courses .container {
        display: flex;
        flex-direction: column;
    }
}