html {
    min-height: 100%;
 }
 
 body {
    overflow: auto;
    background-image: url("./img/bg.png");
    background-size: cover;
    background-repeat: no-repeat;
  }

  
.body-yellow {
 background-image: url("./img/bg.gif");
}


.body-red {
 background-image: url("./img/bg.gif");
}


.body-pink {
 background-image: url("./img/bg.gif");
}


.body-navy {
 background-image: url("./img/bg.gif");
}

.body-green {
 background-image: url("./img/bg.gif");
}

.body-purple {
 background-image: url("./img/bg.gif");
}


.fadeOut {
    background-color: #333333;
    box-shadow: 0px 0px 25px 7px rgba(0, 0, 0, 0.5);
    width: 50vw;
    min-width: 300px;
    max-width: 400px;
    right: 50%;
    bottom: 50%;
    transform: translate(50%,50%);
    position: absolute;
    border-radius: 8px;
    height: 55%;
    min-height: 430px;
    opacity: 0;
    transition-duration: 1s;
}

.intro-card {
    background-color: #335cff;
    box-shadow: 0px 0px 14px 6px rgba(0, 0, 0, 0.8);
    width: 50vw;
    min-width: 300px;
    max-width: 400px;
    right: 50%;
    bottom: 50%;
    transform: translate(50%,50%);
    position: absolute;
    border-radius: 8px;
    height: 55%;
    min-height: 550px;
    opacity: 1;

}

.intro-card-2 {
    background-color: #d4c7ff;
    box-shadow: 0px 0px 14px 6px rgba(0, 0, 0, 0.8);
    width: 50vw;
    min-width: 300px;
    max-width: 400px;
    height: 80%;
    min-height: 700px;
    right: 50%;
    bottom: 50%;
    transform: translate(50%,50%);
    position: absolute;
    border-radius: 8px;
    transition-duration: 1s;
    opacity: 1;
}

.intro-logo {
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    fill: #F6F2EE;
}

.intro-logo-2 {
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    fill: #333333;
    transition-duration: 1s;
}

.main-btn {
    border: solid 0.7px #F6F2EE;
    padding: 10px;
    font-family: 'Raleway', sans-serif;
    font-size: 25px;
    color: #F6F2EE;
    font-weight: 200;
    border-radius: 8px;
    width: 80%;
    margin-left: auto;
    margin-right: auto;
}

.main-btn:hover {
    background-color: #F6F2EE;
    color: #333333;
    transition-duration: 1s;
    font-weight: 300;
}

.main-btn-2 {
    display: none;
}

.icons-wrapper{
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    margin-bottom: 30px;
}

.icons-wrapper-2 {
    margin-left: auto;
    margin-right: auto;
    transition-duration: 0.5s;
}

.icons {
    fill: #F6F2EE;
    border: solid 0.7px #F6F2EE;
    border-radius: 3px;
    margin: 15%;
    padding: 10%;
}

.icons-black {
    fill: #333333;
    border: solid 1px #333333;
    border-radius: 8px;
    margin: 15%;
    padding: 10%;
    transition-duration: 1s;
}

.icons-black:hover {
    fill: #F6F2EE;
    border: solid 1px #F6F2EE;
    background-color: #333333;
    border-radius: 8px;
    margin: 15%;
    padding: 10%;;
    transition-duration: 1s;
}

.icons:hover {
    background-color: #F6F2EE;
    fill: #333333;
    transition-duration: 1s;
}


.portfolio-links {
    opacity: 1;
    font-family: 'Raleway', sans-serif;
    font-size: 17px;
    color: #333333;
    font-weight: 300;
    border-top: solid 1px #333333;
    padding: 2%;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    display: block;
    overflow: auto; 
}

.portfolio-links:hover {
    background-color: #333333;
    color: #F6F2EE;
    transition-duration: 1s;
}

.hidden {
    display: hidden;
}

.links-list {
    margin-top: 20px;
    margin-bottom: 30px;
    border-bottom: solid 1px #333333;
}

@keyframes IntroFade {
    0% {
        background-color: white;
    }
    100% {
        background-color:#07abef;
    }
  }

<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Raleway:ital,wght@0,100;0,300;1,100&display=swap" rel="stylesheet">